Twin brothers and officers for a small southern Colorado police department have been charged with theft after state investigators found the brothers trained K-9s using city funds, sold them to other agencies and pocketed the profits.Aaron Fresquez, Center’s police chief, and his twin brother, Sgt. Adam Fresquez, face theft charges, court records show. Aaron Fresquez was also cited with official misconduct, a misdemeanor.The brothers, 35, allegedly operated a private K-9 business during their on-duty hours and took the money that should have gone to Center, the Colorado Bureau of Investigation said Friday, following a yearlong investigation. The town is about 2,000 people and west of the Great Sand Dunes National Park and Preserve.Aaron Fresquez was named interim chief for the department in 2022, the Center Post-Dispatch reported. At the time, he said he and his brother traveled to North Carolina for K-9 training and raised money to start the K-9 unit. “The program is self-sustaining. We receive town budget money, but when we buy and sell canines, that money comes back into the program. We’ve sold three canines already,” Aaron Fresquez told the newspaper in 2022. The bureau said it began investigating at the request of the 12th Judicial District Attorney’s Office and declined to provide more details on the K-9 business.Court records show the brothers face theft charges between $5,000 to $20,000. They were placed on administrative leave and the city has appointed Lt. Eidy Guaderama as interim chief, CBI said.The investigation is ongoing.A spokesperson with the Center police department did not immediately return a request for comment. An attorney was not listed in court records. This is a developing story that will be updated.