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The helicopter was carrying four crew members and a patient when it crashed on Friday night, officials said.

By Rylee Kirk

Emergency responders on Saturday were searching for four people who were missing after a medical helicopter crashed into a lake in rural Quebec on Friday night, the authorities said.

Five people were on board, four crew members and one patient, said Raphaele Bourgault, a manager for Airmedic, a company that operates the medical helicopter.