An incident involving an off-duty King County Sheriff’s deputy and a juvenile female escalated early Sunday morning into a confusing scene with possible charges of assault and driving under the influence.

According to the Enumclaw Police Department, at about 2 a.m. Sunday an off-duty deputy dressed as the Joker from the Batman films and his male friend, who is not a police officer, were in the Enumclaw Safeway parking lot following a party. The deputy and his friend heard what they thought was a female yelling for help at the McDonald’s across the street.

The two ran to McDonald’s and realized there was no problem.

While the two were checking out the scene, the deputy’s friend began arguing with the group in the parking lot.

The deputy attempted to get his friend to leave, when a teenage girl in the group saw the deputy’s friend had a firearm under his shirt.

The girl decided to throw a bottle at the man, but she missed and hit the deputy.

After hitting the deputy, the girl ran and the deputy chased her. He caught and tackled her at Frankie’s Pizza across state Route 410 from McDonald’s.

The deputy, for the first time, identified himself as a police officer.

He took the girl back to McDonald’s. During a subsequent discussion, she questioned whether he was really a deputy. It is alleged she stood up and the deputy pushed her down. She broke free and ran to a friend’s truck, asking him to get her away from the deputy.

The male driver headed toward Mud Mountain Dam with the girl, but realized he was being pursued by Guardian One, the King County Sheriff’s helicopter.

The driver decided to drive back to Enumclaw. An officer stopped the driver and he was arrested for suspicion of driving under the influence.

The girl was arrested for suspicion of second-degree assault for hitting the deputy with a bottle.

The Enumclaw Police Department is investigating the incident. According to the department, alcohol appeared to be a contributing factor.