A disgruntled black worker is being hunted by SWAT teams after opening fire at a meeting in a quarry - killing three people and injuring six more

African-American Shareff Allman, 47, opened fire after walking into a safety meeting at a California quarry with a handgun and rifle. He fled the scene at Permanente Quarry in Cupertino and several SWAT teams have been dispatched to find him - searching door-to-door with guns drawn, authorities said. Two people were pronounced dead at Permanente Quarry in Cupertino, and a third person died later at the hospital. Six others at the quarry were wounded and taken to area hospitals. Some of them remain in critical condition.