After years of admitting he was in the car where the bullets that killed 2Pac came from, the state of Nevada finally took Keefe D seriously and hit him with murder charges.

However, a deal Keefe cut with the Feds in 2009 could jeopardize the state's prosecution of Keefe.

In 2009, Keefe made a deal with federal investigators that he would speak openly about the murders of 2Pac and The Notorious B.I.G. on the condition that nothing he said could be used against him.

Nevada knows of this deal, so they are unlikely to use any of those direct statements against him and spark a jurisdictional legal battle.

But is Nevada allowed to use those statements as investigative tools?

There isn't a lot of clarity on that, especially since the exact deal Keefe cut isn't public.  Most experts believe Nevada could, although there is no indication yet that they did.

Furthermore, Keefe D may have foolishly said publically what he told the Feds, rendering any debate over what can and can't be used by Nevada moot.

“The proffer agreement simply said that when you sit down and talk to us, whatever you say that is self-incriminating, we won’t use against you. It’s not immunity,” said retired Los Angeles police robbery-homicide Detective Greg Kading, who interviewed Davis in the past. “But when he leaves that room, that agreement doesn’t apply to everything else in his life, as he erroneously believed, so he began to go out and boast about his involvement in the murder. None of that’s protected under the agreement.”