Two more 'significant arrests' as details of Westminster killer's past emerges

Latest: Two more "significant arrests" have been made in connection with the Westminster attack, police have said.

Update 9am: Two more "significant arrests" have been made in connection with the Westminster attack, police have said.

Scotland Yard's top anti-terror officer Mark Rowley said the suspects were held overnight in the West Midlands and North West as he revealed that the killer's birth name was Adrian Russell Ajao.