The Behemoth and Leviathan roller-coasters at Canada’s Wonderland in Vaughan have closed indefinitely after a fatal incident on the Goliath roller-coaster at Six Flags Over Georgia on Monday afternoon.

Police are investigating after a man fell to his death from a roller coaster at a Six Flags near Atlanta, watched by other visitors to the amusement park as he was catapulted from the ride.

The victim fell from the Goliath roller coaster and “hit the car three different times” before falling onto the roof of a haunted house attraction below, an onlooker told CNN affiliate WXIA.