In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Q: Armed police block a road near to the Manchester Arena in central Manchester, England, Tuesday, May 23, 2017. An explosion struck an Ariana Grande concert in northern England late Monday, killing over... (Associated Press) 
  
 Armed police block a road near to the Manchester Arena in central Manchester, England, Tuesday, May 23, 2017. An explosion struck an Ariana Grande concert in northern England late Monday, killing over a dozen people and injuring dozens in what police say they are treating as a terrorist attack. (AP... (Associated Press) 
  
 MANCHESTER, England (AP) — An explosion struck an Ariana Grande concert attended by thousands of young music fans in northern England, killing at least 19 people and injuring dozens in what police said Tuesday was being treated as a terrorist attack. 
  
 Greater Manchester Police said 19 people were confirmed dead after the explosion at Manchester Arena. Northwest Ambulance Service said 59 injured people had been taken to hospitals, and a number of "walking wounded" were treated at the scene. 
  
 Police cars, bomb-disposal units and 60 ambulances raced to the scene as the scale of the carnage became clear. 
  
 "We are currently treating this as a terrorist incident until we know otherwise," said Ian Hopkins, chief constable of Greater Manchester Police. 
  
 There was panic after the explosion, which struck around 10:30 p.m. (2130GMT) Monday night as Grande was ending the concert, part of her Dangerous Woman Tour. 
  
 Grande, who was not injured, tweeted hours later: "Broken. From the bottom of my heart, I am so so sorry. I don't have words." 
  
 Manchester Arena said on its website that the blast struck outside the venue as concertgoers were leaving. Some eyewitnesses said it happened in the foyer of the arena just after the concert ended. 
  
 One witness said Grande had just finished her final song and said "Thank you, Manchester," before leaving the stage. 
  
 The incident led to a nightlong search for loved ones as parents tried to locate their teenage children and groups of friends scattered by the explosion sought to find one another. 
  
 Taxi services offered to give stranded concertgoers rides home for free, and residents opened their homes to provide lodging for people who could not get home because public transport had shut down. 
  
 City officials said the true spirit of Manchester would shine through despite the horrendous incident. 
  
 Twitter and Facebook were filled with appeals for information about people who had not been accounted for. 
  
 Jenny Brewster said she was leaving the concert with her 11-year-old daughter when the blast hit. 
  
 "As I turned around, boom, one loud noise," she told Sky News. "A gentleman said 'run!' so we ran." 
  
 Outside, she said, "you could smell the burning." 
  
 Britain's terrorist threat level stands at "severe," the second-highest rung on a five-point scale, meaning an attack is highly likely. 
  
 There was no immediate claim of responsibility. Online, supporters of the extremist Islamic State group, which holds territory in Iraq's Mosul and around its de facto capital in the Syrian city of Raqqa, celebrated the blast. 
  
 One wrote: "May they taste what the weak people in Mosul and (Raqqa) experience from their being bombed and burned," according to the U.S.-based SITE Intelligence Group. 
  
 If the incident is confirmed as a terrorist attack it would be the deadliest in Britain since four suicide bombers killed 52 London commuters on three subway trains and a bus in July 2005. 
  
 "A huge bomb-like bang went off that hugely panicked everyone and we were all trying to flee the arena," said concertgoer Majid Khan, 22. "It was one bang and essentially everyone from the other side of the arena where the bang was heard from suddenly came running towards us as they were trying to exit." 
  
 Added Oliver Jones, 17: "The bang echoed around the foyer of the arena and people started to run." 
  
 Video from inside the arena showed concertgoers screaming as they made their way out amid a sea of pink balloons. 
  
 British Prime Minister Theresa May said the government was working to establish "the full details of what is being treated by the police as an appalling terrorist attack." 
  
 May is due to chair a meeting of the government's COBRA emergency committee later Tuesday. She and other candidates suspended campaigning for Britain's June 8 election after the blast. 
  
 Police advised the public to avoid the area around the Manchester Arena, and the train station near the arena, Victoria Station, was evacuated and all trains canceled. 
  
 The Dangerous Woman tour is the third concert tour by 23-year-old Grande and supports her third studio album, "Dangerous Woman." 
  
 Grande's role as Cat Valentine on Nickelodeon's high school sitcom "Victorious" propelled her to teen idol status, starting in 2010. 
  
 The tour began in Phoenix, Arizona, in February. After Manchester, Grande was to perform at venues in Europe, including Belgium, Poland, Germany, Switzerland and France, with concerts in Latin America and Asia to follow. 
  
 Pop concerts and nightclubs have been a terrorism target before. Almost 90 people were killed by gunmen inspired by the extremist Islamic State group at the Bataclan concert hall in Paris during a performance by Eagles of Death Metal in November 2015. 
  
 In Turkey, 39 people died when a gunman attacked New Year's revelers at the Reina nightclub in Istanbul. 
  
 There was no immediate claim of responsibility for the attack. Online, supporters of Islamic State, which holds territory in Iraq's Mosul and around its de facto capital in the Syrian city of Raqqa, celebrated the incident. One wrote: "May they taste what the weak people in Mosul and (Raqqa) experience from their being bombed and burned," according to the U.S.-based SITE Intelligence Group. 
  
 Manchester, 160 miles (260 kilometers) northwest of London, was hit by a huge Irish Republican Army bomb in 1996 that leveled a swath of the city center. More than 200 people were injured, though no one was killed. 
  
 ___ 
  
 Katz and Lawless reported from London. AP writer Leanne Italie in New York and AP Music Writer Mesfin Fekadu in Jersey City, New Jersey, contributed to this report. ||||| Tweet with a location 
  
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 In our city's darkest hour, hundreds of Mancunians offered help to those in need. 
  
 Minutes after news broke of the Manchester Arena terror attack there was an outpouring of love and support. 
  
 Members of the public issued offers of help to anyone who was affected by the tragedy. 
  
 Police later confirmed that 19 people were dead and more than 50 were injured in the explosion. 
  
 The moving offers included rooms to anyone who was stuck in the city, lifts out of the city centre, hot drinks or even a simple hug in the aftermath. 
  
 Hotels offered free rooms and city centre businesses stayed open to help anyone who needed it. 
  
 The Living Room bar on Deansgate was offering free hot drinks and shelter to anyone affected. 
  
 Taxis were reported to be offering free rides to people caught up in the devastation. 
  
 #RoomForManchester was trending on Twitter and streaming with acts of kindness that 'restored faith in humanity', as Twitter users around the world praised the actions of kind Mancunians. 
  
 Joanna Denbigh tweeted: “In Stretford, can provide a room/refreshments/lift - anything that might help #RoomForManchester” 
  
 And Sophie Maskell added: “If anyone is around the Deansgate area, DM me if you are in need of ANY help at all. 5 Mins walk away #RoomforManchester #Manchester” 
  
 And Hollie Wright said: “We have room for people... spare bed, sofas and food! In the ancoats area so only down the road from the arena! #RoomForManchester” 
  
 Annie added: “My mate dean is also offering his place as a safe place for people, #manchester #Manchesterarena #RoomForManchester” |||||
A: 
The people of Manchester, England, have opened up their homes to people stranded in the city by a suspected terrorist attack that killed at least 19 people at an Ariana Grande concert Monday night. Offers of help flooded in under the #RoomForManchester hashtag after the blast, with people offering rooms for the night and rides home to people caught up in the attack, the Manchester Evening News reports. Up to 21,000 people, including many children and teenagers, were at the concert, and many found themselves with no way home when train services were suspended after the blast, Metro reports. Hotels offered free rooms and some local cab drivers turned off their meters. There has been no official claim of responsibility for what authorities suspect was a suicide bombing at the Manchester Arena, though the AP reports that ISIS supporters have been celebrating the attack online. At least 59 injured people were taken to six local hospitals after the blast, and medical staff in the city for a conference have offered their assistance, the Guardian reports. World leaders and celebrities sent messages of sympathy after what is believed to be the UK's deadliest attack since the 2005 London bombings, while Grande, who was not injured, tweeted that she was "broken." "from the bottom of my heart, i am so so sorry," she said. "i don't have words."