BREAKING: Larry Sinclair claims he had sex, did cocaine with Barack Obama in 1999 in explosive new Tucker Carlson interview

Sinclar alleged that he met Obama at a Chicago bar in November 1999, where the pair did drugs before engaging in intercourse.

"You're just a guy who's in town for the night, and it sounds like you're looking to party," Carlson began.

"I had given Barack $250 to pay for coke," Sinclair replied. "I start putting a line on a CD tray to snort, and next thing I know he's got a pipe and he's smoking."

Sinclair went on to explain that after a while, he rubbed Obama's thigh to "see where it was going," and was pleased that it "went the direction [he'd] intended it to go." He added that it "definitely wasn't Barack's first time," and suggested it "wasn't his last."

"You had sex with him twice, you did cocaine with him, [and] watched him smoke crack twice, you had no idea who he was?" Carlson asked.

"I had no idea," Sinclair replied.

He went on to suggest that his allegations would have been taken more seriously by those in power "if the media really cared about telling people the truth."

Sinclair first made the allegations against Obama in 2008 in the middle of the then-senator from Illinois' presidential run, and soon released a book.

He was offered $100,000 by Whitehouse.com to pass a polygraph, but failed, and proceeded to suggest the sponsors of the test had been bribed.

As Politico reported at the time, Sinclair has a long criminal history and 13 known aliases. Many of his offenses included elements of fraud and deceit.

During a recent appearance on the Adam Carolla Show, Carlson acknowledged Sinclair's past, but nonetheless said he believed that the allegations were true.

This is a breaking story and will be updated.