A Pima County Sheriff's deputy has been arrested and charged with domestic violence.
Officers were called to Robert Lane's home Monday night after receiving a call from his live-in girlfriend.
Lane reportedly had visible scratches on his face and arms.
He claims he fought his girlfriend off.
She claims he was choking her and she was defending herself.
The Pima County Sheriff's Department has launched an internal investigation.
For that reason, Lane has been reassigned.