Brick attack at Labour MP Mary Creagh's constituency office
Police have launched an investigation after a brick was thrown through the window of the office of Wakefield MP Mary Creagh.
The Labour MP took to Twitter to condemn the attack, which she said had left staff "distressed".
West Yorkshire Police said they were called to the office, on Cheapside in Wakefield, following the incident.
A force spokesman said the building was empty at the time the brick was thrown.
Tweeting about the attack on her constituency office, Ms Creagh said: "Staff distressed to discover brick through office window in Wakefield this morning. No excuse for violence and intimidation in our democracy."
The police spokesman said: " Police were called to an address on Cheapside in Wakefield at 12.50pm today, following reports that a brick had been thrown through a window.
"The building was unoccupied at the time.
"Inquiries are ongoing to determine the circumstances surrounding the incident."
Anyone with information is asked to contact police on 101, quoting 725 of September 12.
Ms Creagh said later: "On Monday morning, a member of my staff discovered that a brick had been put through the window of the office that I share with the regional Labour Party.
"This incident has now been reported to the police, who have reassured me that they are doing everything that they can to track down the individual responsible and bring them to justice.
"My staff and the staff of the Labour Party deserve a safe environment to work in. There is no excuse for this sort of mindless violence in a free and tolerant society."