Police look for cause of fiery Calgary bus crash that killed three passengers

Police were working Friday to determine the cause of a fiery bus crash in Calgary that killed three passengers and injured 16 others, including a police officer who helped save a child.

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

Police said one bus first struck a truck, which then side-swiped an SUV. The bus eventually hit the rear of another bus running on compressed natural gas.

"During the collision, the natural gas tanks on the second bus ignited. The second bus continued forward before striking a sedan," said a news release.

"Within seconds, the fire intensified resulting in an explosion and significant fire inside the bus.

"Three passengers on the second bus were found deceased."

The driver of that bus was able to escape, police said, while the driver of the other bus was trapped, had to be extricated, and was taken to hospital with life-altering injuries.

"In the middle of the chaos, one brave Calgary police officer ran into a burning bus to save the life of a child," Mayor Jeromy Farkas said Thursday.

Police said the officer was recovering at home and that she and the others who were hurt had minor injuries.

The three who died have been identified and their families notified.

The mayor said there would be a full investigation into what happened.

"At this time, it is too early to determine whether impairment, speed or distraction contributed to the collision," added police.

"All possible factors remain under investigation."

Mike Mahar, the head of Calgary's transit union, said Thursday that it's not clear why the fire was so extreme and that natural gas buses are generally safe.

Calgary Transit says on its website that it has nearly 250 compressed natural gas-powered buses, representing about 20 per cent of its fleet.

It says it acquired this type of bus in 2014 and since then the fleet's emissions have reduced significantly.

The website says the city plans to buy 153 more natural gas buses this year to replace diesel buses.

This report by The Canadian Press was first published Oct. 16, 2026.

By Bill Graveland | Copyright 2026, The Canadian Press. All rights reserved.