Police say three people have died and a toddler is in hospital after a car crash northwest of Listowel, Ont., on Friday evening.

Officers with the provincial police say they were called for a collision at about 6:30 p.m. and found that an SUV had crashed into a tractor-trailer as it was crossing an intersection.

Police say the driver and two passengers in the SUV died at the scene of the crash.

They've been identified as Walter Yetman, 60, Donna Yetman, 58, and Stephanie Roloson, 28, all of London, Ont.

Investigators say a two-year-old boy who was also a passenger in the SUV was taken to hospital, where he remains with injuries that are not life-threatening.

Police say the driver of the tractor-trailer was not injured and the investigation is ongoing.