Fights between fans during a championship high school basketball game at Madison Square Garden turned into a melee that spilled into the streets and subways, drawing police on horseback and in riot gear.
Gunfire was heard as the crowd went from the arena to Times Square, but no injuries were reported, police said.
Twenty-one people, mostly teenagers, were arrested, police said. Some were charged with disorderly conduct or resisting arrest and one was arrested on a riot charge.
