A POLICE van carrying a robbery suspect collided with a stationary Light Rail Transit on Chun Wan Road, Tuen Mun, yesterday, overturning and landing on the rail track. Two constables and the 21-year-old suspect were injured, one of the officers seriously. The van was travelling from Tai Hing Estate to Tai Hing police station when the accident occurred. No passengers are believed to have been aboard the LRT.