Philadelphia Police officers are set to appear in court on charges of stealing heroin from a dealer

three Philadelphia Police officers are set to appear in court on charges of stealing heroin from a dealer, federal prosecutors today revealed the trio were planning a second robbery before they were arrested.

Officers Mark Williams, Robert Snyder, and James Venziale hoped to take cash from a man they believed was involved with illegal gambling. As with the earlier robbery, in which the officers unknowingly colluded with an undercover DEA agent to arrest a drug dealer and rob him, the officers apparently believed that their potential victim would not report the stolen money.

According to court documents filed today by the U.S. Attorney's Office, there was another similarity to the earlier heist: the officers' alleged target was an undercover agent posing as a member of the Mafia.