The police department in Worcester, Massachusetts, allowed officers to engage in sexual contact with women suspected of being involved in the commercial sex trade, according to a report the U.S. Justice Department released Monday following a two year investigation.

The 41-page report also found that the police department used excessive force, including the unjustified uses of tasers and police dogs and strikes to the head.

The findings raised concerns that the department engages in racially discriminatory policing, according to Justice Department officials. Worcester, the state’s second-largest city with a population of about 207,000, is located 50 miles west of Boston.