The gunman who killed 12 people at a municipal building in a US beach resort city had submitted his resignation hours before the shooting.
That's according to the Virginia Beach city manager Dave Hansen, who said: "the perpetrator's performance was satisfactory... there were no issues of discipline ongoing."
However, a motive for the killing spree is still unclear.
Forty-year-old DeWayne Craddock had worked as an engineer for the municipality in Virginia Beach for nearly 15 years before carrying out the rampage.

US threatens to strike Iran's Kharg Island oil network after military targets 'obliterated'
US embassy in Baghdad hit in missile attack, security sources say
Four killed in Russian air attack on Kyiv region, officials say
Nigerian army kills 18 terrorists, arrests 37 suspects
North Korea fires missiles towards sea during US, South Korea drills
US offers reward for information on Iran's supreme leader, senior officials
Ethiopia declares national mourning as flood death toll rises to 80
Qatar affirms strategic food and water reserves
