A Pasco County police officer has been fired following an internal investigation that revealed he inappropriately used a stun gun on a suspect.

Zephyrhills Officer Tim Claussen was fired Thursday. He had been on administrative leave since the Sept. 11, two days after he went to the suspect's home to investigate a retail theft.

Police said a review of video from a camera on Claussen's stun gun "clearly shows the subject displaying no active physical resistance" toward the officer.

The 42-year-old suspect Lester Brown was charged with resisting arrest without violence.

Police Capt. Derek Brewer said Claussen didn't offer an explanation for using the stun gun on Brown. He said Claussen had no major disciplinary issues during his 10 years on the force.