Drug Enforcement Administration agents allegedly had sex parties" with prostitutes hired by local drug cartels overseas over a period of several years, according to a report released Thursday by the Justice Department's watchdog. The agents, some of whom had top-secret security clearances, received suspensions of two to 10 days. Former police officers in Colombia also alleged that three DEA supervisory special agents were provided with money, expensive gifts and weapons from drug cartel members, according to the report. The findings were part of a much broader investigation into the handling of allegations of sexual harassment and misconduct from fiscal 2009 to 2012 at federal law enforcement agencies. [Justice Department Inspector General Michael E.] Horowitz said the investigation was "significantly impacted and unnecessarily delayed" by repeated difficulties his office had in obtaining relevant information from the FBI and the DEA. When he did receive the information, he said, it "was still incomplete." Sen. Charles Grassley (R-Iowa), chairman of the Judiciary Committee, called on the Justice Department on Thursday to adopt a zero-tolerance policy for employees who purchase sex. "The Department of Justice may not be taking adequate steps to prevent its own employees from buying sex and thereby contributing to the demand for the human sex trade," Grassley wrote to Acting Deputy Attorney General Sally Quillian Yates.