Kansas City, Mo. ? Police Chief Rick Easley has ordered an investigation into an officer’s use of a taser to subdue a 66-year-old grandmother after she honked her car horn at a police cruiser in front of her house.

Louise Jones was arrested Tuesday on charges of misuse of a car horn on a city street, resisting arrest and intentionally inflicting bodily harm on an officer. Her husband, Fred Jones, 74, also was arrested. He was charged with interfering with an arrest.

Police said Louise Jones tussled with officers when they tried to give her a ticket for honking the horn. One of the officers pulled out the taser, which is capable of issuing a 50,000-volt shock, and then stunned her with it. The officers said Fred Jones then came downstairs and jumped on one of the officers’ back.

The two elderly residents dispute that. Louise Jones said she pulled away from the police when one of the officers grabbed her arm, and her husband said one of the officers had his knee on his wife’s chest.

The Police Department, which allows the use of tasers only in circumstances that could injure an officer, is investigating, police spokesman Capt. Rich Lockhart said Wednesday.

Lockhart said what made the incident particularly curious was that after the officers first confronted Jones about honking the horn, they responded to an unrelated disturbance call. They then returned to give her the ticket while she was in her home.

“What made the officers go back to issue that ticket is not clear from the police report,” Lockhart said. “That’s why the chief wants to look into it further.”