A twin-engine plane crashed in western Nevada Saturday afternoon, killing all five people on board, authorities said today. Witnesses saw the plane nosedive in the town of Gardnerville at about 4:10 p.m. (7:10 p.m. ET), but there was no fire, said Sgt. Jim Halsey of the Douglas County sheriff's office. Authorities believe all five occupants died of blunt force trauma, CNN reported. The six-seat plane had taken off from Minden-Tahoe Airport -- about 5 miles south of Gardnerville. Witnesses said they did not hear any mechanical distress noises from the plane, nor did they see any parts separate from the plane before the crash, according to the sheriff's office. Officials said the plane appeared to fly normally until it crashed about 10 minutes after takeoff. The Federal Aviation Administration is investigating the incident. Teams will inspect the crash site later today.