A teen is dead after spending some time on a "party bus" on Friday night.
Police have ordered an autopsy into the death of the 16-year-old, who died suddenly and quietly on the bus about 10:30 p.m.
About 50 kids boarded the bus at Burnsview Secondary School on Friday night at about 9:30 p.m.
At the time, witnesses said the victim looked fine and was in good spirits, according to police.
But as the bus approached 72 Avenue and 152 Street, the teen passed out and died.
Police say there was no obvious cause of death such as a puncture wound or other trauma.
Police say they conducted about 50 interviews with students that night, many of which had to be taken again because of various levels of intoxication.
Police expect the autopsy to tell them more about how the teen died.
The investigation continues.
@diakiw