article_snippet: had anything to do with what led the teen to head out armed in the first place -- a purported shooting at his girlfriend's apartment, if that in fact happened.
article_snippet: Jeff Cotner said that, while there have nearby shootings that might be tied to gangs, "we (have been) unable to substantiate ... whether or not there was an actual shooting at his girlfriend's apartment.
article_snippet: Then, authorities got the OK to search his girlfriend's apartment and found an unfired rifle cartridge, Cotner said.
highlights_snippet: Police: Suspected shooter went out angry thinking someone shot someone girlfriend's apartment .
  