Dexter Isaac, currently serving life in prison for murder and various other offenses, supposedly admitted Wednesday to his involvement in the 1994 robbery and shooting of deceased rapper Tupac Shakur, according to a letter released by

In 1994, James Rosemond hired me to rob 2Pac Shakur at the Quad Studio.  He gave me $2,500, plus all the jewelry I took, except for one ring, which he wanted for himself, Isaac states in the letter.

The Wall Street Journal reports if New York City police determine the convicted felon's letter is legitimate, they will continue further investigation.

Shakur, one of the most influential rappers of the Nineties, died as a result of a 1996 shooting near the Las Vegas Strip, Rolling Stone reports.  The rapper would have turned 40 today.

Click here to read Isaac's full statement posted by