Major crash detectives are seeking information about two fatal crashes. 

A 50-year-old man has been killed after crashing his Ford Truck through safety barriers, down an embankment and into a valley in Lesmurdie. 

Meanwhile, a 25-year-old man died at the scene after he rolled his Toyota Landcruiser ute near Watheroo road near Dinner Hill Road in Badgingarra.

"There's been too many of those this week Karl, every time we read one of those that impacts on family, friends, colleagues - it's terrible," Millsy said.