Lisa Chavez and Steve Milne said Wednesday that Chief Gene Fretheim shot their dog, Maddy, on Tuesday night. They believe the police chief shot Maddy because she was a pit bull mix.

Maddy, a dog allegedly shot by the Maricopa police chief, is seen in this photo provided by Lisa Chavez .

"Last night, he said, 'Well, she looked like a dog that had bit somebody,'" Chavez recalled one of the chief's officers telling her. "But looking (like) and (being) are two totally different things."

Another resident, Marlo Tipton, said the same thing happened to her pit bull on Friday.

"He was a good dog, and his last memories were of him being shot an dragged through the dirt by some people he didn't even know," Tipton said in tears as she talked about her dog, Tiny.

Tipton said her neighbor informed her that Fretheim shot Tiny three times while he was chained up in Tipton's yard.

Both families said they believe Fretheim is on a quest to exterminate pit bulls, and they want him fired.

Fretheim said via phone Tuesday that he shot Chavez' dog, because he had reports if her roaming the streets and biting one of his workers.

Eyewitness News set up an interview with Fretheim for Wednesday, but city officials canceled the interview and said the chief decided to take the day off.

The police office was also closed Wednesday when Eyewitness News went by to obtain the reports about Chavez' dog biting someone.