A medical helicopter has crashed on a busy freeway in northern California, leaving three people injured.

A medical helicopter crashed in Sacramento, California, injuring three crew members critically, after returning from a patient transfer; firefighters...

A medical helicopter crashed in Sacramento, California, injuring three crew members critically, after returning from a patient transfer; firefighters...

Three people were in critical...

Three people were in critical...

There were no patients on board the helicopter that crashed on a California highway. However, the pilot and two medical staff members were injured....

There were no patients on board the helicopter that crashed on a California highway. However, the pilot and two medical staff members were injured....

Sacramento, US – A medical helicopter crashed onto a highway in the US state of California on Monday, resulting in three critical injuries,...

A medical helicopter crashed on a busy California freeway, trapping a woman underneath the mangled wreckage ... and dispatch audio from the incident...