Rep. Barney Frank (D-Mass.), one of the most prominent openly-gay members of Congress, slammed the U.N. General Assembly (UNGA) president's anti-gay remarks made at last week's meeting.

UNGA president Ali Abdussalam Treki, a Libyan diplomat, last week said that being gay was "not really acceptable" according to his Muslim faith.

"This is par for the course for a Libyan official – offensive, stupid and bigoted," Frank told On Top Magazine, a site tailored to gays and lesbians, in an email.

Treki made his comments at a press conference before the opening of the General Assembly meeting in New York last week.

Reps. Mike Quigley (D-Ill.) and Ileana Ros-Lehtinen (R-Fla.) previously condemned Treki's comments.