A crushed and flattened white hunk of metal lies on a tow truck's bed after a fatal crash.
A tow truck carries the smashed remains of the vehicle from the scene on state Route 94. (Photo courtesy of OnScene.TV)

Two motorists died early Saturday when the driver lost control on a transition ramp to Interstate 15, sending the car crashing to the lanes below.

The driver had attempted to take the eastbound state Route 94 connector to northbound I-15 just before 12:30 a.m., according to OnScene.TV. But the car left the over-crossing and hit a large freeway sign before landing on the westbound side of SR-94.

The crash caused the vehicle’s roof to cave in; both the male and female occupants were pronounced dead at the scene.

Authorities declared a SigAlert until 3:50 a.m. on westbound SR-94, closing lanes extending to Interstate 805. The California Highway Patrol and San Diego Fire-Rescue Department responded to the scene.