Police believe both rappers had the intention to have Wayne killed in April
After interrogating Jimmy Carlton Winfrey – the guy who allegedly fired Wayne's bus – both rappers' name were mentioned.
Legal documents state that Winfrey made a call to a phone owned by Birdman moments after Winfrey shot up the bus in Atlanta.
After that call, Winfrey drove to the Mandarin Oriental Hotel ... where Wayne's entourage stopped after the shooting. Cops don't say it in the indictment, but the insinuation is Winfrey was told to go finish the job ... but as we reported, police had met Wayne's entourage at the hotel to investigate the shooting, TMZ reports.
According to the site, Winfrey has been Young Thug's tour manager. Cops also point out that Winfrey is seen brandishing an assault rifle in Thug's "Halftime" music video ... which includes lyrics threatening to shoot Wayne in the head.
Birdman and Thug have not been charged with any crime -- but the legal document shows that the police believe both rappers are closely tied to the shooter.