Another CN freight train has derailed, this time in Saskatchewan near the town of Asquith about 33 kilometres west of Saskatoon.
The RCMP say six cars came off the tracks Saturday evening around 7:30, but none were carrying dangerous goods.
According to one report the cars were loaded with lumber.
The RCMP issued a statement saying they were investigating, but there was no mention of any injuries or evacuations.
There have been four train derailments in Alberta in the past two months, including one in October that sparked a dangerous petroleum fire that forced the evacuation of the village of Gainford.
The accidents have led Alberta's transportation minister to launch an investigation into whether rail companies are meeting their safety obligations.