MCALESTER — A plane crash unfolded Sunday morning at McAlester Regional Airport, injuring two.

Airport Manager Butch Mellor said the pilot and a passenger of a four-seater aircraft were believed to be doing “touch and go” procedures at the airport when the plane went down to the south of the airport runway. Mellor said he was told the pilot and passenger were a student and instructor.

Both were taken by ambulance to a hospital. Mellor said preliminary reports are that the injuries were not considered life-threatening.

Mellor said he was told the two victims are from either the Oklahoma City or Sundance area. The incident happened some time before 9:30 a.m.

Investigators from the National Transportation Safety Board are on their way to investigate a possible cause.

“They are on their way,” Mellor said.