Gunman kills 2, self at Fla. video game event

The young men had gathered at Chicago Pizza in Jacksonville, Fla., to conduct some serious business: crushing each other at "Madden NFL 19" as their fans watched online.

The finalists in Sunday's regional video game tournament would proceed to the Madden Classic in Las Vegas, where the top prize is $25,000. David Katz, a slender 24-year-old who nicknamed himself "Bread," had traveled from Baltimore to compete - only to be eliminated, witnesses said.

But Katz wasn't done. As his competitors continued to game Sunday, Katz got a handgun and opened fire in the pizzeria. Horrified fans watched the violence unfold on