Yesterday, Dexter Isaac, an inmate at Brooklyn's Metropolitan Detention Center who is serving live in prison for crimes including murder, confessed to involvement in the 1994 shooting and robbery of Tupac Sharkur at the Quad Studios in New York City. He did so in a letter sent to AllHipHop.com.

Isaac claims that he did so at the behest of James "Jimmy Henchmen" Rosemond, who paid him $2,500 - plus whatever he could take Shakur. The letter also included mentions of Sean "Diddy" Combs in a manner that suggested that the Bad Boy CEO was not innocent. Oddly, however, Isaac declined to go into further detail about his allegations, instead saying that more would come in the future.

Jeffrey Lichtman, a lawyer who represents Rosemond, has told Nancy Dillon of the New York Daily News that Isaac is lying and that he is doing so because he doesn't want to spend the rest of his life in prison. He is currently sentenced to just that, having been indicted on charges of murder, robbery, fraud and witness intimidation, according to AllHipHop.com.

"It's a flat out lie," Lichtman said. "Dexter Isaac is not claiming this 17 years later to clear his conscience. He's doing it because he's told anybody who will listen he doesn't want to die in prison. He has kids and wants to work off his sentence. He can't be trusted."

Meanwhile, a spokesperson for the New York Police Department told the paper that detectives will be interviewing Isaac.

Via AllHipHop.com.