The Transportation Safety Board says a deadly mid-air plane crash in Saskatchewan was caused by the left wings of the two small planes touching each other.

Five people, including three from the Mossleigh area, southeast of Calgary died in the Saturday crash, northeast of Saskatoon.

A Transportation Safety  Board’s Peter Hildebrand says the planes may have had a difficult time judging each other’s speed and distance.

“It may be difficult to see other aircraft depending on your angle, depending on the structure of aircraft components and other background visual information that pilots might be seeing,” he explains.

Hildebrand says there was no way anyone could have survived the crash.