Instructions: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Input: Story highlights "I'm overwhelmed. I'm extremely happy to be vindicated," he says 
  
 New information has come to light, U.S. attorney says 
  
 Source says investigators are looking at someone trying to frame him 
  
 Curtis had been accused of mailing the poison to Obama, a U.S. senator and a judge 
  
 Thrust into the headlines last week, accused of sending ricin-tainted letters to President Barack Obama and two other officials, Paul Kevin Curtis is a free man again. 
  
 "It's like a train has been lifted off my shoulders," Curtis told CNN's "Piers Morgan Live" on Tuesday. "I'm overwhelmed. I'm extremely happy to be vindicated and out and able to see my kids." 
  
 Charges were dropped and "new information" became available, U.S. Attorney Felicia Adams said. 
  
 Authorities are investigating whether someone may have tried to falsely implicate the Elvis impersonator from Corinth, Mississippi, a law enforcement source said on condition of anonymity. 
  
 Curtis was arrested April 17 and charged with sending a threat to the president last week after letters containing the poison triggered security scares around Washington. 
  
 Curtis said his arrest was surreal. 
  
 JUST WATCHED Ricin suspect released from custody Replay More Videos ... MUST WATCH Ricin suspect released from custody 15:12 
  
 JUST WATCHED Ex-ricin suspect: Thought cops said rice Replay More Videos ... MUST WATCH Ex-ricin suspect: Thought cops said rice 02:56 
  
 JUST WATCHED Atty. for ex-suspect: He was framed Replay More Videos ... MUST WATCH Atty. for ex-suspect: He was framed 03:21 
  
 "It looked like a scene out of a movie," said Curtis, adding that there were hooded men with machine guns. "I was just overwhelmed. I just kept asking, 'what is ricin? What did I do?'" 
  
 Curtis' attorney, Christi McCoy, said her client has been framed by someone who used several phrases Curtis likes to use on social media. 
  
 The letters read, in part: "To see a wrong and not expose it, is to become a silent partner to its continuance." 
  
 They were signed "I am KC and I approve this message," a source told CNN. 
  
 They each had a Memphis, Tennessee, postmark and no return address. 
  
 McCoy said she was sure someone else was to blame. 
  
 "I do believe that someone who was familiar and is familiar with Kevin just simply took his personal information and did this to him," McCoy said. "It is absolutely horrific that someone would do this." 
  
 Curtis said it was an eye-opener for him. 
  
 "I think now, how many people are thrown in jail because of circumstantial evidence and someone can frame you that easily," he said. 
  
 Curtis had been accused of sending letters containing "a suspicious granular substance" to Obama; Sen. Roger Wicker, R-Mississippi; and Sadie Holland, a Justice Court judge in Lee County, Mississippi. 
  
 The FBI said the substance tested positive for ricin, a toxin derived from castor beans that has no known antidote. 
  
 No illnesses had been found as a result of exposure to the toxin. ||||| Law enforcement officials searched the home of a second Mississippi man in connection to ricin-laced letters sent to the president and a U.S. senator after charges were dropped without explanation against a man arrested in the case last week. 
  
 Paul Kevin Curtis, right, who had been in custody under the suspicion of sending letters which tested positive for ricin to U.S. President Barack Obama and U.S. Sen. Roger Wicker, R-Miss., and his brother... (Associated Press) 
  
 A federal agent wearing a hazmat suit secures a container used during a search of the Tupelo, Miss., home of Everett Dutschke, Tuesday, April 23, 2013 in connection with the recent ricin attacks. No charges... (Associated Press) 
  
 Federal authorities wear hazmat suits as they search the home of Everett Dutschke, Tuesday, April 23, 2013 in Tupelo, Miss., in connection with the recent ricin attacks. No charges have been filed against... (Associated Press) 
  
 Paul Kevin Curtis, who had been in custody under suspicion of sending ricin-laced letters to President Barack Obama and others, left, hugs his attorney Christi McCoy during a news conference following... (Associated Press) 
  
 Federal agents wearing hazardous material suits and breathing apparatus inspect the home and possessions in the West Hills Subdivision house of Paul Kevin Curtis in Corinth, Miss., Friday, April 19, 2013.... (Associated Press) 
  
 Paul Kevin Curtis, who had been in custody under suspicion of sending ricin-laced letters to President Barack Obama and others, wipes a tear from his eyes during a news conference following his release... (Associated Press) 
  
 Federal agents wearing hazmat suits inspect the grounds around the house owned by Everett Dutschke, in connection with the recent ricin attacks, as one of his dogs howls Tuesday, April 23, 2013 in Tupelo,... (Associated Press) 
  
 Everett Dutschke, whose Tupelo, Miss., home was searched Tuesday by dozens of officials, some in hazmat suits, had feuded with Paul Kevin Curtis, a 45-year-old celebrity impersonator who had maintained his innocence since his arrest. 
  
 The search began early Tuesday afternoon and ended about 11 p.m. CDT, with officials declining to comment on what they had found or on the next phase of the investigation. 
  
 At one point, two FBI agents and two members of the state's chemical response team left Dutschke's property and began combing through ditches, culverts and woods about a block away from his house in the neighborhood of single-family detached homes. 
  
 Dutschke, who spoke with The Associated Press by telephone during the search, said his house was also searched last week. 
  
 "I don't know how much more of this I can take," he said. 
  
 No charges have been filed against Dutschke and he hasn't been arrested. Both he and Curtis, who had faced charges in the case, say they have no idea how to make the poisonous ricin and had nothing to do with sending the letters to President Barack Obama, U.S. Sen. Roger Wicker of Mississippi and a state judge. 
  
 Referring to investigators' questions for him about the case, Curtis said after he was released from custody Tuesday afternoon, "I thought they said rice and I said, 'I don't even eat rice.' ... I respect President Obama. I love my country and would never do anything to pose a threat to him or any other U.S. official." 
  
 A one-sentence document filed by federal prosecutors said charges against Curtis were dropped, but left open the possibility they could be reinstated if authorities found more to prove their case. Prosecutors were not immediately available for comment. 
  
 Since Curtis' arrest at his Corinth, Miss., home on April 17, his attorneys have said their client didn't do it and suggested he was framed. An FBI agent testified in court this week that no evidence of ricin was found in searches of Curtis' home. 
  
 The dismissal is the latest twist in a case that has been strange from the beginning and rattled the country during the same week as the Boston Marathon bombing and a fertilizer plant explosion in West, Texas. 
  
 Dutschke (DUHST'-kee) and Curtis are no strangers to each other. Dutschke said the two had a disagreement and the last contact they had was in 2010. Dutschke said he threatened to sue Curtis for saying he was a member of Mensa, a group for people with high IQs. 
  
 Hal Neilson, an attorney for Curtis, said the defense gave authorities a list of people who may have had a reason to hurt Curtis. 
  
 "Dutschke came up," he said. "They (prosecutors) took it and ran with it. I could not tell you if he's the man or he's not the man, but there was something there they wanted to look into." 
  
 An FBI intelligence bulletin obtained by the AP said the two ricin-laced letters addressed to Obama and Wicker said: "To see a wrong and not expose it, is to become a silent partner to its continuance." Both were signed, "I am KC and I approve this message." 
  
 Curtis was already well known to Wicker because he had written to the Republican senator and other officials. Curtis also wrote a novel called "Missing Pieces," about black-market body parts he claimed to have found while working at a hospital _ a claim the hospital says is untrue. Curtis posted similar language on his Facebook page and elsewhere. The documents indicate Curtis had been distrustful of the government for years. He told the AP on Tuesday that he realizes his writings made him an easy target. 
  
 Multiple online posts under the name Kevin Curtis on various websites that could be seen by anyone refer to the conspiracy he claimed to uncover when working at a local hospital from 1998 to 2000. In one post, Curtis said he sent letters to Wicker and other politicians. He signed off: "This is Kevin Curtis & I approve this message." 
  
 Christi McCoy, another attorney for Curtis, said she doesn't know what new information prosecutors have, but said the plot to frame her client was "very, very diabolical." 
  
 Curtis, dressed after his release Tuesday in a black suit, red shirt, necktie and sunglasses, said he met Dutschke in 2005 but that for some reason Dutschke "hated" and "stalked" him. "To this day I have no clue of why he hates me." 
  
 Ricin is derived from the castor plant that makes castor oil. There is no antidote and it is at its deadliest when inhaled. It can be aerosolized, released into the air and inhaled. The Homeland Security handbook says the amount of ricin that fits on the head of a pin is enough to kill an adult if properly prepared. 
  
 Dutschke said agents asked him about Curtis, whether Dutschke would take a lie-detector test and if he had ever bought castor beans, which can be used to make the potent poison. 
  
 "I'm a patriotic American. I don't have any grudges against anybody. I did not send the letters," said Dutschke, who was a Republican candidate for the Mississippi House of Representatives in 2007 but lost. 
  
 After charges were dropped against Curtis, he said: "I'm a little shocked." 
  
 Dutschke said his attorney wasn't with him and he didn't know whether he was going to be arrested. 
  
 Tuesday's events began when the third day of a preliminary and detention hearing was canceled without officials explaining the change. Within two hours, Curtis had been released, though it wasn't clear why at first. 
  
 FBI Agent Brandon Grant said in court Monday that searches last week of Curtis' vehicle and house in Corinth, found no ricin, ingredients for the poison, or devices used to make it. A search of Curtis' computers found no evidence he researched making ricin. Authorities produced no other physical evidence at the hearings tying Curtis to the letters. 
  
 All the envelopes and stamps were self-adhesive, Grant said Monday, meaning they won't yield DNA evidence. One fingerprint was found on the letter sent to a Lee County judge, but the FBI doesn't know who it belongs to, Grant said. 
  
 The experience, Curtis said, has been a nightmare for his family. He has four children _ ages, 8, 16, 18 and 20. It also has made him reflect deeply on his life. 
  
 "I've become closer to God through all this, closer with my children and I've even had some strained relationships with some family and cousins and this has brought us closer as a family," he said. 
  
 ___ 
  
 Wagster Pettus reported from Jackson. Associated Press writers Holbrook Mohr in Oxford, Jack Elliott in Jackson, Miss., and Pete Yost in Washington contributed to this report. |||||
Output:
Paul Kevin Curtis, the eccentric celebrity impersonator previously suspected of sending ricin-laced letters to President Obama, appeared on CNN's Piers Morgan Live yesterday, shortly after being released from seven days in prison. "I heard the word 'ricin' for the first time in my life by a federal agent Homeland Security while being interrogated for four hours," Curtis told Morgan. "I thought he said 'rice.' I said I don't even eat rice usually. You know, I'm not even a rice lover." Morgan tweeted that the interview was the "weirdest of [his] life." "Christy McCoy, my attorney, was amazing," said Curtis. "In the jungle of law and court, you have monkeys, you have kangaroos, and you have lions. She was the lion queen." Curtis told Morgan he believed he was framed by an acquaintance—identified by the AP as martial arts instructor J. Everett Dutschke—who "has it out for [him]," though he wasn't sure why. "I'm a sort of up-in-your-face guy, but I'm quiet and reserved on the one hand, but I'm an entertainer on the other," he speculated. Authorities searched Dutschke's home yesterday, but no charges have been filed against him. Click to watch the full video of Morgan's interview with Curtis at CNN.