The March report provided Thursday to the Associated Press says that after a 3-year investigation, the Los Angeles County District Attorney's Office didn't have enough evidence to show the tabloid paid officers for the photos, which became an obstacle in charging them.
Officers Blanca Lopez and Rebecca Reyes may still get fired from the LAPD for allegedly leaking the photos and are slated to appear before disciplinary panels in August.
A call to Rihanna's attorney seeking comment wasn't immediately returned.
Brown was arrested on suspicion of beating Robyn Rihanna Fenty on Feb. 8, 2009.
