Saskatoon police are investigating a two vehicle crash that caused an SUV transporting six people with special needs to flip onto its side Wednesday.

It happened at about 2:30 p.m. CST at the intersection of Avenue P and 23rd Street.

Police said the SUV was carrying residents of a home for people with special needs.

Emergency crews set up a triage area to make an initial assessment of how badly people were hurt.

Police said 12 people were taken to hospital with a range of injuries. The youngest patient is four years old, and the oldest is a 44-year-old woman, paramedics said.

Witnesses said they saw a car travelling at a high speed before it slammed into the SUV.

Drivers were asked to avoid the area until the scene had been cleared.

Another serious crash

Meanwhile, emergency crews are on the scene of another serious crash in the city.

It happened at about 3:30 p.m. CST at the intersection of 43rd Street East and 1st Avenue North.

Police said one person was hurt, but the extent of their injuries was unknown.

Drivers were being asked to avoid that area, as well, while officers investigate.

Police also reminded drivers to follow the speed limits and signage when driving, and pay attention to the flow of traffic.