Waterbury Detective Robert Liquindoli was arrested Friday morning by FBI and IRS agents  on tax charges.Tthe Waterbury Police Department has launched an internal investigation and placed Detective Liquindoli on administrative leave pending the outcome of that investigation. Detective Liquindoli joined the Waterbury Police Department in 2000 and has noy been the subject of any disciplinary action. According to a statement from Waterbury Police Chief Michael Gugliotti, “the charges against Detective Liquindoli stem from a personal tax issue and not from his activities as a Waterbury Police Detective.”