Three male Minneapolis police sergeants claim in a lawsuit that their female boss favored lesbians for promotions, plum assignments and other opportunities, then retaliated against the men when they blew the whistle.

Sgts. Mark Osland, David Voss and Marvin Schumer said in their lawsuit filed Tuesday that they endured a "hostile work environment" under Inspector Kristine Arneson after they gave information about her to investigators from the city's Department of Human Rights.

In response to the suit, Police Chief Tim Dolan issued a statement supporting Arneson, saying she is "highly respected" and "has an impeccable record of success as a commander for many years."

In 2007, the Human Rights Department investigated allegations that Arneson "favored lesbian females in awarding assignments, transfers and promotions, and that heterosexual male officers were consistently denied preferable assignments," according to the suit, filed in Hennepin County District Court.

The sergeants worked for Arneson when she commanded the city's southwest precinct. She now commands the downtown precinct.

Osland claims that within weeks of talking to city investigators, he was denied a transfer to the assault unit. He said he was subjected to harassment in the form of anonymous notes on his chair and desk.

He complained in September 2007 to city Human Resources about harassment and retaliation. His complaint was dismissed in April 2008. He said he was denied a transfer to the homicide unit in May 2008.

Schumer claims he was subjected to "a number of involuntary transfers that were disruptive and disturbing," the lawsuit said. Voss said he was denied mentoring and counseling necessary to pass the lieutenant's exam and has been unable to attain the rank.

The lawsuit claims that Dolan has said he will not give promotions or preferred assignments to officers who make complaints. The officers seek unspecified damages.

City Attorney Susan Segal said the city had not received a copy of the complaint late Tuesday, so she couldn't comment.

Twin Cities lawyer Gregg Corwin represents the plaintiffs.

Rochelle Olson • 612-673-1747