The Police said that the vehicle was heading towards Minuwangoda from Ja-Ela when it skidded off the road.
The vehicle had crashed into a wall crushing those inside.
The driver of the vehicle and two others were admitted to hospital for treatment.
However all three were later pronounced dead at the Ragama hospital.
The victims were males aged 69, 49 and 47.
Investigations into the accident are underway. (Colombo Gazette)