(CNN) -- A twin-engine plane crashed in western Nevada Saturday afternoon, killing all five people on board, authorities said.
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.
Three of the passengers killed were identified as Paul Dallas, 43; Leia Denner, 40; and Brent Fahey, 30; all of Nevada. The fourth passenger and the pilot would not be named until their families were told, the sheriff's office said.
Authorities believe all five occupants died of blunt force trauma.
The six-seat plane had taken off from Minden-Tahoe Airport -- about 5 miles south of Gardnerville, Halsey said.
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 Sunday morning.
CNN's Janet DiGiacomo contributed to this report.
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