The Justice Department has “systemic” problems in how it handles sexual harassment complaints, with those found to have acted improperly often not receiving appropriate punishment, and the issue requires “high level action,” according to the department’s inspector general.

Justice supervisors have mishandled complaints, the IG said, and some perpetrators were given little discipline or even later rewarded with bonuses or performance awards. At the same time, the number of allegations of sexual misconduct has been increasing over the past five years and the complaints have involved senior Justice Department officials across the country.

The cases examined by the IG’s office include a U.S. attorney who had a sexual relationship with a subordinate and sent harassing texts and emails when it ended; a Civil Division lawyer who groped the breasts and buttocks of two female trial attorneys; and a chief deputy U.S. marshal who had sex with “approximately” nine women on multiple occasions in his U.S. Marshals Service office, according to investigative reports obtained by The Washington Post under a Freedom of Information Act request.