sedley, saskatchewanTwo people died after the pickup truck they were in collided with a semi-truck near Sedley, Sask., which is about 50 kilometres southeast of Regina.

Two people are dead following a head-on crash involving a semi-truck and a pickup near Sedley, Sask., on Tuesday morning.

It happened around 7 a.m. CST around five kilometres south of the town on Highway 33.  

According to the RCMP, it's believed a northbound truck was attempting to pass another vehicle when it ran into the southbound semi.

Two males, whose ages weren't immediately available, died at the scene. Two other people in the pickup, a male and a female, were taken to hospital with injuries. The driver of the semi-truck, a man, was also taken to the hospital.  

Heavy fog blanketed much of southern Saskatchewan on Tuesday, although it's not known how much of a factor that was in the crash.

An RCMP reconstructionist was at the scene and will be assisting with the investigation, the RCMP said. 

The road will be closed for the next few hours and then one lane will be opened around 11 am.  

Police were advising travellers there is still fog in the the area. They should avoid Highway 33 near Sedley or expect long delay, police said.