Dickinson High School near Wilmington, DE student had loaded gun

Given that Bloomberg is collecting also sorts of data on guns at school, I have collected some cases.  Is it likely that this 17-year-old has had gang connected activity?  From the Delaware News Journal:

The boy, who lives in Wilmington, "was never any threat to students or faculty during the incident," Delaware State Police spokesman Sgt. Paul G. Shavack said. Investigators found "no indication" that he planned to shoot anyone or had made any type of threat, he said.

But following the boy's arrest, Shavack said, the investigation revealed that he already had a past felony conviction and was prohibited from possessing a firearm. Details of his past offense were not disclosed.

The gun seized from his backpack was "a fully loaded Kel-Tec 9mm Luger semiautomatic handgun with the serial number obliterated," Shavack said. . . .