A 21-year-old man was arrested at the scene
Crews called to two train incidents Thursday – pedestrian struck and fire
The three teens, ages 16 and 17, were killed when their vehicle hit a tree in the early hours of Aug. 21
Police called to 16000-block of 104 Avenue for single-vehicle crash
RCMP and emergency crews are on scene, with traffic stopped in both directions
Emergency services are on site
The crash took place Thursday night in Willoughby
The IIO is looking into the Canada Day collision