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LARIMER COUNTY, Colo. — Two men were killed after a plane crashed into a reservoir in Larimer County on Monday morning, the Larimer County Sheriff’s Office said.

The plane crashed into Culver Reservoir southwest of Berthoud, near Larimer County Roads 2 and 23 about 7:45 a.m. Rescue crews from Loveland Fire Rescue Authority and the sheriff’s office responded to assist with dive teams.

Divers entered the water about 8:03 a.m. and removed the two men before they were taken to a hospital where they were pronounced dead. The sheriff’s office said the men were in the water for 50 minutes.

The tail of the plane, a Cessna 182, was seen sticking out of the water near the shore and several emergency personnel were at the crash site.

Divers were in the water putting flotation devices under the plane to lift it in an attempt to remove it from the water.

It’s not known where the plane took off from or where it was heading. The two men on board have not been identified.

The cause of the crash is under investigation by the Federal Aviation Administration and the National Transportation Safety Board.