From Stan Oklobdzija:
Police officers arrested an alleged gang member with a gun at the Fruitridge light-rail station Friday night after he threatened others on the train with it, police said.
Officers received a call from a passenger on the southbound Blue-Line train about 8:40 p.m. saying two groups of youths were arguing at the Broadway station, said Sgt. Jim Hose. One brandished a handgun, Hose said.
Police and county sheriff's officers waited for the group at the Fruitridge light-rail station and started searching passengers as they left the train, Hose said.
Hose said the youth with the gun was arrested.
Hose said witnesses reported the group was claiming to belong to the Fourth-Avenue Blood t gang, based in Oak Park, as they entered the train.