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Medical helicopter crashes on Chicago highway

Published: Updated:

Four people were injured when a medical helicopter crashed on a highway in Chicago, Illinois, on Saturday night, with one in critical condition, officials said.

The pilot made a "mayday" radio call from a Eurocopter 135 air ambulance at about 9:15 p.m. Central Time (0215 GMT Sunday), according to a Federal Aviation Authority statement. The helicopter crashed on a ramp of the Interstate 57 highway soon after, it said.

Local media reported that a patient on the air ambulance was in critical condition, while the pilot and two others on board were listed in stable condition in Chicago hospitals.