The Islamic State group claimed responsibility on Tuesday for bombing a pop concert in the British city of Manchester and killing 22 people, including children.
The group said in a statement published on its social media channels that “one of the caliphate’s soldiers placed bombs among the crowds,” and threatened more attacks.
British police said they had arrested a suspect in connection with the attack.
“With regards to the ongoing investigation into last night’s horrific attack at the Manchester Arena, we can confirm we have arrested a 23-year-old man in South Manchester,” police said in a statement.
The English version pic.twitter.com/JGtjEPqjuV
— roi kais (@kaisos1987) May 23, 2017
Earlier, a pro-Islamic State social media account published a video purporting to be show the Manchester bomber.
“This is only the beginning,” a masked man in front of an Islamic State flag says in the video, speaking in accented English. He add, “The lions of the Islamic State of Iraq and al-Sham are beginning to attack all of the crusaders.”
The man also held up a piece of paper with the word Manchester and Monday’s date.
ISIS terrorist claims responsibility for Manchester attack. 22 murdered after a Muslim suicide bomber targeted children leaving a concert. pic.twitter.com/Anv5vMFyeM
— Behind The News (@Behind__News) May 23, 2017
Even before official confirmation that the attack was carried out by Islamic State, many pro-IS people took to Twitter to celebrate.
— Rita Katz (@Rita_Katz) May 23, 2017
A user called @OWYS663 in a now deleted Twitter account appeared to have tweeted about the attack several hours before it happened, using the hashtag #ManchesterArena and the IS flag. But it is unclear whether the time stamp on the tweet is authentic or whether it was tweeted after the attack.
— Sara Prinsloo Art (@saraprinslooart) May 23, 2017
Twitter has suspended dozens of accounts since the attack.
The explosion at the end of a sold-out concert by US star Ariana Grande in the 21,000-capacity Manchester Arena in northwestern England was the deadliest terror attack in Britain for more than a decade.
Twenty-two people were confirmed dead, and many of the 59 people injured have life-threatening conditions, British Prime Minister Theresa May said Tuesday.
“We know that among those killed and injured were many children and young people,” she added.