Tupac Shakur's former bodyguard has revealed he was an undercover FBI agent during his time with the slain rapper. Speaking at the launch of new documentary Tupac Assassination: Conspiracy Or Revenge? in Los Angeles on Tuesday night (16Oct07), David Hackie confessed he was an informant for the Federal Bureau Of Investigation, who became an agent while serving the rapper and other labelmates at Death Row. Hackie has been a leading force in the investigation of Shakur's death - in 2004 he alleged that Death Row Records officials offered a police officer $25,000 (GBP12,500) to kill rap rival Notorious B.I.G. Both Shakur and Notorious B.I.G.'s murders remain unsolved. Hackie has also claimed that Death Row founder Suge Knight masterminded the Shakur slaying - because he owed the rapper millions in unpaid royalties. The bodyguard was speaking during a question-and-answer session after a screening of the film, which addresses conspiracy theories into Shakur's 1996 death.