Hamilton Fish, president and publisher of progressive publication the New Republic, has been placed on a leave of absence pending an investigation into allegations of sexual harassment from two female colleagues at the magazine.

"I have been made aware that a number of employees have come forward in the last few days to express concern about certain workplace interactions that have created an uncomfortable environment for them," Win McCormack, the publication's editor-in-chief, wrote in an email to staff Sunday announcing Fish would be on leave until "an immediate, independent investigation" takes place.

The Huffington Post reported Monday members of the New Republic newsroom were warned of Fish's past behavior towards women, which included claims he allegedly choked a female staffer at the Nation Institute.

J.J. Gould will step up as acting president and Art Stupar will serve as acting publisher, McCormack said.

"I appreciate the candor our employees have displayed in coming forward with their concerns, and I take the concerns very seriously," McCormack added. "I also want to assure everyone that we will be taking additional steps to ensure that [the New Republic's] work environment is respectful, professional, and free of harassment."