In the ongoing Duane "Keffe D" Davis murder trial for the 1996 killing of rapper Tupac Shakur, a former detective testified that he could not verify Davis' confession of involvement.

• Closing arguments are scheduled for Monday in Las Vegas.
• The trial centers on Davis, 63, who has pleaded not guilty to one count of murder.
• The defense strategy is to discredit Davis' statements as mere bravado, as he is the only one facing charges despite allegedly being in the car with the shooter.