Police look to cause of fiery Calgary bus crash, try to identify third person killed

CALGARY — Police are trying to determine the cause of a fiery bus crash in Calgary that killed three passengers and injured 16 others, including a police officer.

Two transit buses were involved in the chain-reaction crash with several other vehicles Thursday on a busy road in the city’s northeast.

Police say the three who died were on a bus with natural gas tanks that ignited into flames and, within seconds, intensified and caused an explosion.

They say two of the victims have been identified and work to identify the third is ongoing.