An aerial view of the Palace of Westminster in central London. (Victoria Jones/PA)
(Picture: PA Wire)A police officer has been sprayed in the face with an unknown substance near Parliament and colleagues are searching Westminster for the suspect.
The Metropolitan Police said the officer was attacked with the substance at around 8pm on Wednesday while on duty at the Palace of Westminster in Millbank.
Police are using a helicopter to search for the suspect, who ran in the direction of Victoria Tower Gardens after the incident.
The officer suffered mild irritation to his face and was assessed by London Ambulance Service, the Met said.
He did not require hospital treatment.
Anyone who witnessed any suspicious activity in the area, or who has information about the incident, should call 101 with the reference 6588/01DEC.
