HOUGHTON, Mich. (AP) — Officials say a passenger airplane heading from Chicago made an emergency landing in Michigan’s Upper Peninsula after an alarm indicated possible smoke in a cargo area.

No one was injured in Wednesday night’s landing of SkyWest Airlines flight 5061 at Houghton County Memorial Airport, located near the cities of Houghton and Hancock.

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SkyWest says in a statement that the plane, operating as United Express flight from O’Hare International Airport, received a “cargo indication” before its scheduled landing at the airport. The airline says the plane landed without incident and all 31 passengers left the plane at the gate.

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Houghton County Sheriff’s Office Sgt. Thomas Hyrkas says the alarm was “about smoke in the cargo area.” Officials are investigating what tripped the alarm.

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