Police spokesman Paul Browne said Wednesday that if police determine the post is legitimate they will seek to interview the prisoner.
The claim, attributed to Dexter Isaac, was posted on the website AllHipHop.com. In a letter that the site said came from a Brooklyn prison, Isaac said he was paid $2,500 by another hip-hop mogul to rob Shakur outside a studio in Manhattan in 1994.
Shakur suffered gunshot wounds but eventually recovered. He was killed in 1996 in an unsolved slaying.
Much of the post is laced with bitterness directed at the person the writer says hired him to carry out the crime. The writer says that person has wrongly accused him of being a government informant.
“Now I would like to clear up a few things, because the statute of limitations is over, and no one can be charged, and I’m just plain tired of listening to your lies,” Isaac wrote, adding that the mogul also allowed him to keep some of the jewelry he stole from Shakur.
“I still have as proof the chain we took in the robbery,” he writes.
According to the Federal Bureau of Prisons website, a person named Dexter Isaac is serving life in prison and is housed at the Metropolitan Detention Center in Brooklyn.
An employee there said inmates were not allowed to receive calls and were allowed only approved in-person visits. In order to be approved, a person must first write to the inmate, and receive a visitor form.
It wasn’t clear whether Isaac still had a lawyer, and a call to the website wasn’t returned.