Seven people have been arrested and six addresses raided in connection with the Westminster attack, British police said Thursday.
The suspect acted alone and was inspired by international extremism, London's Metropolitan Police Service said.
Four people, including the attacker, died in the rampage near parliament on Wednesday, Assistant Deputy Commissioner Mark Rowley said in revising the casualty figures.
Seven of the 29 injured remain in critical condition, he said.
© 2022 dpa GmbH