Continental Airlines Flight 1404 bound for Houston ran 200 yards off a runway at Denver International Airport and into a ravine Saturday night, catching fire and injuring 58 of the 112 people aboard, authorities said.

Two women were reported in critical condition at the University of Colorado Hospital.

Those onboard escaped down emergency chutes from the side of the fractured plane about 6:18 p.m.

The cause of the Boeing 737's crash and fire has not been determined.

"It is way too early to know what caused it," Kim Day, manager of aviation for city of Denver, said.

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