The personnel chief of the Federal Emergency Management Agency — who resigned just weeks ago — is under investigation after being accused of creating an atmosphere of widespread sexual harassment over years in which women were hired as possible sexual partners for male employees, the agency’s leader said Monday.

The alleged harassment and other misconduct, revealed through a preliminary seven-month internal investigation, was a “systemic problem going on for years,” said FEMA Administrator William “Brock” Long. Some of the behavior could rise to the level of criminal activity, he said.

Some of the claims about the agency’s former personnel chief are detailed in a written executive summary of the investigation provided to The Washington Post. FEMA officials provided other details and confirmed that the individual under investigation, whose name was redacted from the report, is Corey Coleman, who led the personnel department from 2011 until his resignation in June.