POLICE are investigating an alleged sex attack at the home of MPs Alan and Ann Keen.

A 42-year-old woman told police she was sexually assaulted by two men in the early hours of Saturday morning after a party held by squatters got out of control.

The squatters were holding a leaving party after they were ordered by a judge to leave the property in Brook Road South, Brentford – which they have occupied since the MPs became involved in the expenses row.

What started as a celebration quickly turned nasty after gatecrashers began trashing the house. It is alleged the sexual assault took place at about 2am.

Police were collecting forensics from the property during the weekend and have interviewed a number of revellers from the party but no arrests have been made.

A spokeswoman for the Met Police said: "Hounslow Police are investigating a sexual offence allegation committed in the early hours of Saturday 11 July.

"The offence was reported to police by the victim, a female aged 42, after the alleged incident occurred at a squat in Brook Road South, Brentford.

"Officers attended the scene and a crime scene has been established and all occupiers at the premises have been fully co-operating with police."