FALL RIVER, Mass. (WPRI) -- The Fall River Police Department said one of their own was arrested by the Boston Police Department's Human Trafficking Unit. According to a post on the department's social media page, officer Mitchell Walsh, 28, was taken into custody as part of a sting operation rela ted to an ongoing investigation. At the time of his arrest, Walsh was on leave from the department due to unrelated personnel matters. "Prior to this incident, the Department was preparing to initiate formal proceedings under the civil service disciplinary process. His employment status is now under further review in light of these serious new developments," the post read. According to a report from Boston police, an officer posing as a 15-year-old child, was contacted by someone, later identified Walsh, after an undercover ad was placed on a website that is "commonly used by individuals who are trafficked and by individuals who want to purchase sex from these victims." During the conversation, Walsh discussed "bringing cocaine, a bottle of Tito's vodka and nips." Officers then approached Walsh's vehicle and placed him under arrest. Inside his vehicle, they found one bag that contained what was believed to be cocaine and two smaller bags inside his wallet that also contained what was believed to be cocaine. They also found a bottle of vodka and a package of small alcohol bottles. Walsh is being charged with enticement of a child under 16, sexual conduct for a fee with a child, attempted to commit a crime to wit attempted rape of a child, possession with intent to distribute a Class B drug to wit: cocaine. Fall River Police Chief Kelly Furtado released the following statement: The conduct alleged is reprehensible and stands in direct opposition to the values we expect from members of this Department. We take these matters extremely seriously and are fully cooperating with the Boston Police Department. There is no place in law enforcement for anyone who violates the publics trust. The investigation is active and no further details have been released at this time. Download the WPRI 12 and Pinpoint Weather 12 apps to get breaking news and weather alerts. Watch 12 News Now on WPRI.com or with the new 12+ smart TV app. Follow us on social media:                     Close Thanks for signing up! Watch for us in your inbox. Subscribe Now Daily Roundup SIGN UP NOW ...read more read less