Three people, including an infant, are dead after a head-on collision northeast of High Prairie early Saturday morning in which police believe alcohol is a factor.

Local RCMP were dispatched at around 2:30 a.m. to the collision near Gift Lake on Hwy. 750, 70 kilometres north of High Prairie.

Police said one of the vehicles had five occupants and that the three people in the front, including an infant,  had succumbed to their injuries by the time emergency services arrived.

Two other passengers in the back seat were transported by STARS air ambulance. One was a second infant taken to an Edmonton hospital in critical condition, while the other was a youth who was transported to Slave Lake Hospital in serious condition.

STARS also transported the passenger of the other vehicle to an Edmonton hospital where they remain in critical condition. The driver of the same vehicle is also being treated in Edmonton for his injuries, RCMP said.

Police said the highway at time of accident was "observed to be clear, dry and straight. "

An autopsy is scheduled for next week at the office of the Chief Medical Examiner in Edmonton.