The after-party for a Tory Lanez concert went to hell when gunshots rang out next to the Canadian hip-hop star's tour bus -- and fans turned on him in the aftermath.
Law enforcement tells us the incident went down just after 2 AM in Lincoln, Nebraska ... when fans started arguing over who could party on Tory's tour bus after his show. Things got heated, and cops say 21-year-old Anthony Parks busted out a handgun and fired 3 shots into the air.
No one was injured though, because Parks was firing a starter pistol with blanks ... according to police. He was cited for disturbing the peace and released.
We're told Tory was interviewed by police before he got outta Dodge. He left behind some pissed off fans who were trying to get on his bus to meet him. Clearly, the gunshots didn't scare them off the scene.