MEMPHIS, Tenn. - Memphis police say an officer was arrested after he entered his ex-girlfriend's house and found her in bed with another man.

Police say 33-year-old James Valentine was off-duty and holding a .40 caliber pistol when he used a spare key to enter his ex-girlfriend's house. A police affidavit shows Valentine escorted the man out of the house after finding the pair in bed.

The ex-girlfriend called police, who arrested Valentine and found the gun. According to the affidavit, she told police Valentine had previously refused to return the key and he did not have permission to enter.

Valentine was charged with aggravated burglary and aggravated assault. He has been relieved of duty with pay, pending the outcome of an investigation.

Court records do not show if Valentine has a lawyer.