(CNN) -- Zachary Tomaselli, who was thrust into the national spotlight this month as the third man to publicly allege that former Syracuse University coach Bernie Fine molested him, said on Monday he will plead guilty to charges that he sexually abused a teenage boy.
Tomaselli is facing 11 charges, including gross sexual assault, in Maine involving alleged assaults against a then 13- and 14-year-old in 2009 and 2010.
He said the victim was a boy that he had grown close to when Tomaselli was his summer camp counselor.
"I'm going to plead guilty ... I take complete responsibility for what I did," he told CNN by phone from Lewiston, Maine.
Tomaselli, now 23, said he and the boy touched each other and masturbated together and that he tried to blackmail the younger boy into staying his "friend."
In 2010, Tomaselli said he was taking oxycodone and because of the drug, his decision-making ability was "horrible" and he made "stupid mistakes."
"Right, I admit to sexually abusing the boy," he told CNN.
Tomaselli is the third man to publicly say Fine molested him. Mike Lang and his stepbrother, Bobby Davis, have also stepped forward to accuse the former men's assistant basketball coach of molesting them over several years.
Tomaselli said he and Fine watched pornography together before Fine fondled him in a hotel room in Pittsburgh, Pennsylvania, where he'd gone to watch a Syracuse game in 2002. He was 13 years old when the alleged abuse occurred.
Police in Syracuse and Pittsburgh are investigating the allegations and looking for other potential victims, authorities have said.
When the allegations first surfaced, Fine -- married with a son and two daughters -- called them "patently false." He has not commented since.