The Brief

SACRAMENTO, Calif. (KTTV) - Three people were seriously injured after a medical helicopter crashed on a California freeway on Monday night, officials said.

What we know:

Cell phone video of the crash was captured by a driver on Highway 50 when the helicopter experienced what officials are calling an

"in-air emergency" around 7 p.m.

Authorities said the three injured were the pilot, a nurse and a paramedic. One of the crash victims had to be rescued from underneath the aircraft while another was ejected. A group of motorists helped the fire department lift part of the aircraft to free the person who became pinned, officials said.

No other injuries were reported.

The three victims are expected to survive their injuries sustained in the crash.

Cause of crash under investig

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