Manchester terror attack: What we know

Twenty-two people, including children, were killed in a suicide bombing at a pop concert packed with teens in the British city of Manchester late Monday.Here is what we know so far about the terror attack, the deadliest in Britain since 2005.Police said they were called at 10:33 pm (2133 GMT) Monday to reports of an explosion at Manchester Arena during a concert by US pop star Ariana Grande, who is popular with teenagers and pre-teens.