The Mankhurd police are on lookout for the driver of trailer that allegedly rammed into a motorcycle resulting in the riders death on Friday evening. Police said,Suryakant Gaikwad (42),was on his way to his apartment when a trailer rammed into him from behind. Gaikwad was rushed to the civic-run Rajawadi Hospital in Ghatkopar,where he was declared dead on arrival. While Gaikwad was being rushed to hospital,the trailer driver drove away. However,some persons noted the vehicles registration number. We have begun inquiries about the vehicle and the driver, said senior inspector Shankarsingh Rajput.