Turns out the whole thing was a gigantic hoax:
"The Los Angeles Times has acknowledged that it unwittingly relied on fabricated FBI documents, created by a con man, for a report that implicated associates of rap mogul Sean "Diddy" Combs in the 1994 shooting of rapper Tupac Shakur.
"The story's author, Pulitzer Prize-winning reporter Chuck Philips, said in a statement late yesterday: "In relying on documents that I now believe were fake, I failed to do my job. I'm sorry." Deputy Managing Editor Marc Duvoisin also apologized, saying in a separate statement: "We should not have let ourselves be fooled. That we were is as much my fault as Chuck's. I deeply regret that we let our readers down."
Hat Tip: McArdle