DEVELOPING: 4 LA County Fire Helicopters are enroute to Catalina Island after reports of a helicopter down, which occurred shortly before 8 PM this evening. A US Coast Guard helicopter is also on scene. OC scanner reported 5 occupants were on board the chopper, 3 of which have been rescued so far.

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More details will be provided as they become available.

UPDATE: A pilot and flight nurse are killed, and several others hurt after a medical helicopter crashes off the coast of Avalon. Survivors are rushed to L.A. hospitals after being plucked from the water.

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