At least 22 people have been killed in what's being described by British police as a terrorist incident after an Ariana Grande concert on Monday night at the Manchester Arena.
Main developments:
- At least 22 have been killed, children among the dead
- Attack carried out by one man, according to police
- Improvised explosive device used in what police have called a terrorist incident
- Prime Minister Theresa May calls it an "appalling terrorist attack"
Credit: CNN