SAN ANTONIO -

A San Antonio Police officer is at the center of an internal investigation after a woman claimed he used excessive force during an arrest.

Latoya Lewis said she filed a complaint with the department’s Office of Internal Affairs, after the officer exhibited what she considered unnecessarily aggressive behavior while arresting her.

IMAGES: Woman claims police brutality

Lewis said she came to the scene of a shooting on Foster Road Tuesday to provide moral support for her niece, whose boyfriend was killed in the shooting.

She said an officer at the scene spoke rudely to her niece, and when Lewis questioned his behavior, the officer threatened to arrest her.

“I simply told him, 'You cannot take me to jail, I haven’t done anything wrong,'” Lewis said. “And he said, 'You want to bet?'”

Lewis said the officer reached for her arm, and when she pulled back, he hit her in the face, threw her to the ground, and handcuffed her.

According to the official police report, Lewis punched the officer first, but the report also mentions a bruise on Lewis’ cheek, which she still has two days later.

Lewis was arrested and charged with assaulting a public servant, resisting arrest, and interfering with a public servant.

Lewis denies hitting the officer.

The police department confirmed an internal investigation would be conducted.