Brick thrown at Labour MP Mary Creagh's Wakefield office window Published duration 12 September 2016

image caption The brick was thrown at the window of the Cheapside office just before midnight on Friday, a Labour Party spokesperson said

A brick has been thrown at a window of a Wakefield Labour MP's constituency office.

Mary Creagh condemned the attack and said staff were "distressed" by the discovery on Monday morning.

A Labour Party spokesperson said it happened at the Cheapside office just before midnight on Friday and was caught on CCTV.

The office, shared by the regional Labour Party, was empty at the time. West Yorkshire Police is investigating.

image copyright Lauren Hurley/PA image caption MP Mary Creagh said staff were "distressed" by the incident

"No excuse for violence & intimidation in our democracy."

image copyright Twitter image caption The MP took to social media to condemn the attack

A BBC survey found one in four Yorkshire MPs have received death threats or abuse in the past three years.

West Yorkshire Police recently offered advise and training to local MPs on how to step up their security after the death of the Batley and Spen Labour MP Jo Cox