DALLAS -- A police officer was placed on administrative leave Thursday over a traffic stop involving an NFL player whom he kept in a hospital parking lot and threatened to arrest while his mother-in-law died inside the building.

Officer Robert Powell also drew his gun during the March 18 incident involving Houston Texans running back Ryan Moats in the Dallas suburb of Plano, police said.

"I can screw you over," he said at one point in the videotaped incident. When another officer came with word that Moats' mother-in-law was indeed dying, Powell's response was: "All right. I'm almost done."

Dallas Police Chief David Kunkle apologized to the family and announced that Powell would be on paid leave pending an internal investigation.

"When we at the command staff reviewed the tape, we were embarrassed, disappointed," Kunkle said. "It's hard to find the right word and still be professional in my role as the police chief. But the behavior was not appropriate."

Powell, 25, a three-year member of the force, stopped Moats' SUV outside Baylor Regional Medical Center at Plano after Moats rolled through a red light.

Police officials said Powell told his commanders he believed he was doing his job, and that he drew his gun but did not point it. Kunkle said Powell was not necessarily acting improperly when he pulled his weapon out, but that once he realized what was happening should have put the gun back, apologized and offered to help the family in any way.

"His behavior, in my opinion, did not exhibit the common sense, the discretion, the compassion that we expect our officers to exhibit," Kunkle said.

Moats' wife, who was in the car along with other relatives, said Powell pointed his weapon at her.