According to cops, Birdman and Young Thug are connected to a plot to kill Lil Wayne … which went down the night Wayne’s tour bus got shot up in Atlanta … The explosive allegation comes in the indictment for Jimmy Carlton Winfrey — the guy busted for firing at Wayne’s bus back in April. According to the docs, moments after Winfrey shot up the bus in Atlanta … he called a phone owned by Birdman. Adding further suspicion — after that call, Winfrey drove to the Mandarin Oriental Hotel … where Wayne’s entourage stopped after the shooting. Birdman and Thug have not been charged with any crime — but the indictment makes it clear cops think they’re closely tied to the shooter.