SEVEN people have been arrested in raids in London, Birmingham and elsewhere in connection with the Westminster terror attack.

Met Police senior anti-terrorism officer Mark Rowley said late yesterday that six places were raided last night (March 22).

Mr Rowley revised the death toll down from five to four - the attacker, PC Keith Palmer, who he stabbed, a woman in her mid-40s, and a man in his mid-50s, who were mown down as the terrorist sped across Westminster Bridge in his car.

He said 29 people had been treated in hospital with seven in a critical condition.

At the scene of one of the police raids, a flat in Hagley Road, Birmingham, one witness told the Press Association: "The man from London lived here."

Mr Rowley said it was still his belief the attacker worked alone and was inspired by "international terrorism", adding there was no specific information to suggest any further threat to the public.

Speaking in the shadow of New Scotland Yard, yards from the site of Wednesday's atrocity, Mr Rowley said a "mix of nationalities" were among the dead.

He said: "Hundreds of detectives have been working through the night and during that time officers have searched six addresses and made seven arrests.

"The inquiries in Birmingham, London and other parts of the country are continuing."