Two boys involved in a dispute on a MAX train were arrested Thursday night after witnesses told police one of the boys had a loaded .22 caliber handgun in the waistband of his pants.

A 13-year-old boy with him also was taken into custody when police found a BB gun in his backpack.

Transit Police officers were called at about 8:20 p.m. to the Old Town/Chinatown MAX stop where the boys were taken into custody. The 11-year-old was taken to the Donald E. Long Juvenile Detention Home. The 13-year-old was taken to the Janus Youth Program.

Witnesses told police that a group of boys and girls got into a dispute with another MAX passenger after one of the boys bumped into the passenger's baby stroller as they boarded the train. During the argument, the 11-year-old boy lifted his shirt to show the woman a gun in his waistband. When he started to pull the gun, the woman backed away and the boy put the gun back into his waistband, witnesses said.

The woman called 9-1-1 and the train stopped at the Old Town/Chinatown stop where the victim identified the boy with the gun.