A criminal investigation is now underway into a deadly train derailment in B.C. that killed three Calgarians working for the Canadian Pacific Railway in 2019.

The TSB said it has advised Transport Canada to review the efficacy of air brake system inspection and maintenance procedures for grain hopper cars used in unit train operations.

A high-speed train hit a railway engine and crashed into a pedestrian overpass at a station in the Turkish capital Ankara on Thursday, killing nine people and injuring 47 others, officials said.