A Salina pilot was killed and three other people were hurt when a small plane crashed in Missouri early Sunday morning.

The Missouri State Highway Patrol says that the pilot, Charles Sojka of Salina, was killed in the crash around 9 a.m. Sunday near the airport in Boonville, Missouri. Passengers Brenda Schewe of Salina, Kathryn Taylor of Wichita and Jacob Taylor of Kansas City were taken to a Columbia, Missouri, hospital to be treated for injuries. Schewe is a doctor in Salina.

Tim Rogers of the Salina Airport Authority says Sojka was a flight instructor at Sojka Aviation. Rogers says the plane had left Salina earlier in the week and was on its way back from Boonville.

The Federal Aviation Administration is investigating the cause of the deadly incident.

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Information from: the Associated Press and Metro Source News