Education Minister Branko Ruzic is the first Serbian official to resign over the shootings, despite widespread calls for more senior officials to step down in the wake of the back-to-back bloodshed.

Eight people were killed and seven were wounded Saturday in suburban Dallas before the assailant was killed by a police officer who happened to be nearby, authorities said.

A celebration Friday evening erupted in gunfire at The Scratch Kitchen in downtown Ocean Springs.

Serbian state television says the attacker used an automatic weapon to shoot randomly at people, killing at least 8 and wounding 13 in a town close to Belgrade.