Blast witness: 'Everybody was just screaming'published at 09:37 British Summer Time 23 May 2017
Police in Manchester say 22 people, including children, are now known to have been killed in an explosion at a pop concert last night.
The police are treating the blast as a terrorist incident, which happened at the Manchester Arena after American singer, Ariana Grande, finished her show.
Karen Ford from Sheffield was in the audience with her daughter and described what happened when the blast went off: