SINGAPORE - A motorcyclist died in an accident involving a prime mover in Jurong on Thursday (Sept 14), with the 46-year-old driver later arrested for causing death by a negligent act.

The police said they were alerted to the accident at the junction of Jurong West Avenue 2 and Jalan Boon Lay, towards Jalan Bahar, at 1.19pm.

The 20-year-old motorcyclist was pronounced dead at the scene.

The Singapore Civil Defence Force said it was alerted at about 1.20pm and dispatched two fire engines, two ambulances and a support vehicle.

The Straits Times understands that the motorcyclist's pillion rider was flung under the prime mover and trapped underneath.

SCDF extricated the 17-year-old using hydraulic rescue tools and took him to the National University Hospital.

He was also in serious condition, as the hospital was alerted to be on standby to receive him.

The 46-year-old male prime mover driver was subsequently arrested for causing death by a negligent act, the police said. Police investigations are ongoing.

Videos contributed to citizen journalism site Stomp showed a blue tent on the road and a green prime mover parked ahead.

At least one helmet can be seen on the road.

The accident caused traffic congestion and the Land Transport Authority advised motorists to avoid the left lane on Jalan Boon Lay after Jurong West Central 1.