Helicopter crash in Polk County leaves 1 dead, 3 others injured

One person has died, and three people are being treated at a hospital after a helicopter crash in Polk County, Texas DPS says.

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Authorities say the Bell 206 helicopter crashed around 11:45 a.m. Thursday.

Based on preliminary information by the Texas DPS, the helicopter was flying over private property when for an unknown reason, crashed. Three passengers were on board the plane, one of whom, identified as Daniel King, 54, was pronounced dead at the scene. The other passengers: Brayden King, 26, and Brocton King, 23, were rushed to CHI St. Luke's in unknown condition.

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Additionally, officials identified the pilot as John Martin, 73, of Montgomery, Texas, and was rushed in unknown condition to Memorial Hermann Hospital for treatment. 

The Federal Aviation Administration and the NTSB will be investigating the crash.