A CareFlite medical helicopter on the way to pick up a patient came "very close" to striking a drone aircraft Monday near Denton, the company's top executive said.

The helicopter had just taken off at about 5:30 p.m. when the incident occurred about four miles south of Denton Regional Airport, said CareFlite Chief Executive Officer Jim Swartz.

"It went right past the aircraft," Swartz said. "I would say it was very close. We were lucky nothing terrible happened."

The pilot, a nurse and a paramedic were in the helicopter at about 500-600 feet above the ground, Swartz said.

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Posted by Claire Cardona, Breaking News Hub producer