A car carrying a family of five crashed on the Seletar Expressway (SLE) on Sunday, killing a 38-year-old woman.

The car, a grey Toyota multi-purpose vehicle (MPV), went out of control and skidded at around 1.50pm near the Tampines Expressway exit, Chinese daily Lianhe Zaobao reported.

The 37-year-old driver's eldest son, aged nine, was in the front passenger seat while his wife and two younger sons, aged three and six, were seated in the back.

According to Zaobao, the MPV was rounding a bend when it skidded and hit a metal barrier. The force of the impact shattered the MPV's right rear window, and flung the driver's wife and youngest son out of the vehicle.

A police spokesman told The Straits Times that the woman was found motionless and pronounced dead at the scene by paramedics.

The youngest son is understood to have injured his head and back. He was taken to Khoo Teck Puat Hospital, where he is stable.

The man had back pain and was taken to Tan Tock Seng Hospital.

His eldest son, who had a minor head injury, and his second son, who was seated on the left rear seat and had abrasions, were both taken to KK Women's and Children's Hospital.

The accident reportedly caused a two-hour jam on the SLE, after the police arrived at the scene and cordoned off two lanes.

Investigations are ongoing.