At least 19 people have been killed and 50 others injured after an apparent explosion rocked Manchester Arena in the United Kingdom, where thousands of fans had flocked to see American pop superstar Ariana Grande, according to local police.
Police first responded to reports of an explosion at the arena around 10:35 p.m. local time. Authorities say they are currently treating the incident as a possible terror attack.

Latest statement on incident at Manchester Arena pic.twitter.com/BEpLOan3dY (https://t.co/BEpLOan3dY)
— G M Police (@gmpolice) May 23, 2017 (https://twitter.com/gmpolice/status/866808564316344321)The venue said via Twitter that the incident occurred "in a public space" while fans were leaving the concert:

pic.twitter.com/cPwkQbrYp2 (https://t.co/cPwkQbrYp2)
— Manchester Arena (@ManchesterArena) May 23, 2017 (https://twitter.com/ManchesterArena/status/866808098798927873)Several videos posted to social media on Monday night showed an intense police response in the streets surrounding the venue, as the Greater Manchester police warned people to stay away from the area. Witnesses inside the arena reported a loud bang and then mayhem as concert-goers attempted to flee.

UK police: "A number of fatalities" after reports of an explosion at Ariana Grande concert. https://t.co/RgYcXGZ7q6
— The Associated Press (@AP) May 22, 2017 (https://twitter.com/AP/status/866792364244963328)
Police statement on incident at Manchester Arena pic.twitter.com/gaKASukx9a (https://t.co/gaKASukx9a)
— G M Police (@gmpolice) May 22, 2017 (https://twitter.com/gmpolice/status/866786909544230912)The arena holds around 20,000 fans, there to see Grande, who is in the midst of her multi-city The Dangerous Woman Tour.
This is a developing story and will be updated.
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