Detailed Instructions: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Problem:WASHINGTON (AP) — The United States says an American citizen may have gone missing in Yemen. 
  
 A State Department official says the U.S. is aware of reports of a missing American but can't discuss any individual's situation. The reports had indicated an oil worker was taken hostage in the capital of Sanaa, currently controlled by Shiite rebels known as Houthis (HOO'-theez). 
  
 The State Department official says the U.S. urges all Americans living in Yemen to leave as soon as they safely can. The official wasn't authorized to comment by name and requested anonymity. 
  
 The State Department says there's a high security threat to Americans because of terrorist activities and armed groups in Sanaa that have detained U.S. citizens before. 
  
 A Saudi-led coalition has been fighting the Houthis in Yemen since March 2015. ||||| DUBAI (Reuters) - Yemen’s Houthi forces have detained a U.S. citizen in the capital Sanaa for reasons that were not immediately clear, two colleagues of the man said on Monday. 
  
 The Iran-aligned Houthis control much of northern Yemen, including Sanaa, and are battling a Saudi-led coalition that is trying to restore the internationally recognized government. 
  
 Nadia Burch told Reuters that her husband, Danny Lavon Burch, was seized on Saturday after taking his children to school. He had been working in Yemen since the late 1980s, currently with the oil company Safer, said Burch, a Yemeni. 
  
 “He has no problems or disputes with anyone, which is why he didn’t leave as others did,” she said. “I ask for the release of my husband and his safe return to me.” 
  
 A U.S. State Department official said they were aware and concerned about the report. 
  
 The Houthi movement did not respond to a request for comment and the Safer oil company was also not immediately available for comment. 
  
 Two of Mr. Burch’s colleagues in Sanaa said Houthi forces were responsible, without elaborating. But Nadia Burch said the kidnappers had not contacted her and she was unsure of their identity. 
  
 More than 10,000 people have been killed in Yemen’s civil war. It began in March 2015 when the Houthis advanced on the interim headquarters of President Abd-Rabbu Mansour Hadi in the southern port city of Aden, forcing him to flee the country and seek Saudi help. |||||
Solution:
An American oil worker has reportedly been kidnapped in Yemen. The wife of 63-year-old Danny Burch, an employee of Yemeni-owned oil company Safer, says five armed men driving a pickup truck without license plates took him from his car on a busy street in the Yemeni capital of Sanaa on Saturday, per the New York Times. The kidnapping took place "in broad daylight in front of everyone," says Nadia Forsa, who later found her husband's car parked on the side of the road. A Yemeni security official and two of Burch's colleagues confirmed the account. The US State Department says it is aware of the report, per the AP. No group has claimed responsibility, but Reuters reports two of Burch's colleagues blamed the Houthi rebels who occupy Sanaa. The Times notes the Houthis are known to abduct foreigners for ransom or because they believe them to be spies. Burch was born in Louisiana and spent years working on oil rigs in Texas before taking a job in Yemen in 1994. He moved there permanently in 2005 when he fell in love with Forsa, a Yemeni woman, his brother tells the Longview News-Journal. The pair went on to have three children, aged 7, 9, and 12. Burch also has three children from a previous marriage.