By Kate Ward
Updated April 19, 2010 at 08:03 PM EDT

Gerald Imes, the brother of Oscar-winning actress Mo’Nique, admitted on Oprah Winfrey’s talk show that he molested the Precious star when they were young, reports the Associated Press. Imes, who appeared on the program today, said the sexual abuse started when he was 13 and when Mo’Nique was 7 or 8, and continued for over a year. “I abused and betrayed the trust of another sibling, my sister, my blood sister,” he said before apologizing to the actress: “I’m sorry, Mo’Nique. I’m sorry.”

The actress had discussed the molestation in previous interviews. Mo’Nique’s rep has not returned EW’s request for comment.