MADISON, Wis. -

A man who allegedly pulled out a firearm during a gang-motivated fight on a Madison Metro bus was arrested Wednesday, according to a release.

Madison police said an investigation into the July 29 incident by the Crime Prevention and Gang Unit led to the arrest of two suspects.

The gun was drawn during a fight between four men, which was caught on surveillance video as the bus arrived at the North Transfer Point, according to the release.

CPGU members developed probable cause to arrest Leon MA Tunstall, 21, of Madison, and a 15-year-old Madison boy, whose name was not released.

Tunstall and the 15-year-old were found playing basketball at Warner Park just after 5:30 p.m. Wednesday, police said. Both were arrested after a short foot chase.

The 15-year-old allegedly had the gun during the incident on the bus, but he was not armed when he was arrested. He faces tentative charges of disorderly conduct while armed, battery to a transit passenger, disorderly conduct and obstructing.

Tunstall faces tentative charges of battery to a transit passenger, disorderly conduct, obstructing and bail jumping.

Madison crime stories from the past 12 months - locations are approximate