The California quarry shooting spree on Wednesday morning has been linked by police to Shareef Allman, 45, now officially a suspect.

A disgruntled employee opened fire at a meeting at a Lehigh Southwest Cement Company quarry early Wednesday morning.

The assailant arrived at a company meeting with an assault rifle and a handgun. He then opened fire on the workers at the quarry, located in Cupertino, Calif., about 15 miles south of San Jose. The gunman then left the meeting and began walking around the quarry grounds before fleeing the area.

At least two people are reported dead, with at least four more seriously injured, according to media reports.

Allman's vehicle was recently found near a Hanson Permenant quarry, according to KCBS-AM, where a woman had been the victim of an attempted carjacking. According to the woman, a lone gunman matching Allman's description tried to take her car and then shot her in the leg. He then fled on foot, said Santa Clara County Sheriff's spokesman Jose Cardoza.

Cardoza said Allman remains at large, and may be armed with an AK-47.

Unconfirmed reports by NBC news said Allman contacted police with a radio at the site and threatened to continue shooting.