Update (10:20 PM EST): At least 19 people have reportedly been killed and 50 injured, as of press time. Police are treating the scene at Ariana Grande's Manchester Arena concert as a possible suicide bombing, and have focused their investigation on one man believed to be a potential attacker.
"We are working to establish the full details of what is being treated by the police as an appalling terrorist attack," British Prime Minister Theresa May said in a statement. "All our thoughts are with the victims and the families of those who have been affected."
Ariana Grande's Manchester Arena concert ended with two explosions tonight, according to the Daily Mail. After fans inside the venue heard loud booms, the Arena issued a mass emergency evacuation, as thousands of concertgoers evacuated in a panic. Emergency services are currently responding on site, according to the Greater Manchester Police, who're now reporting multiple deaths and injuries.
"There are a number of confirmed fatalities and others injured," an official statement reads. "Please avoid the area as first responders work tirelessly at the scene. Details of a casualty bureau will follow as soon as possible."
\u201cPolice statement on incident at Manchester Arena\u201d
— Greater Manchester Police (@Greater Manchester Police)
After Grande finished the last song of her Dangerous Woman tour and left stage around 10:40 PM GMT, fans reported "loud bangs," which were speculated as being either bombs or gunshots. In a since-deleted tweet, one person initially alleged the sound came from popped balloons filled with gas, but attendees are reporting the explosions were let off near the Manchester Arena exits.
"The lights came on after the gig and people were starting to leave," a witness told the Independent. "As I turned to the left there was an explosion. It was about 40 feet behind us near one of the exits. We just thought it was people messing about then it happened again. Another explosion sounded."
England's Manchester Arena allegedly filled with smoke and fans were spotted outside covered in blood, though Grande is reportedly safe, according to Variety. Liverpool City Region metro mayor Steve Rotheram told the BBC there were "a good 20 to 30 people lying injured" nearby the box office. Another concertgoer says he was "thrown 30 feet" after the explosions.
Footage from tonight's event is making its way online, including the clip, below, which shows the 21,000-person venue filled with chaos: