UPS worker planning mass shooting had 20,000 rounds of ammo

Authorities searching the California home of a UPS worker who threatened a mass shooting found body armor, tactical rifles and 20,000 rounds of ammunition, police said Monday.

Thomas Andrews, 32, was arrested on suspicion of evading police, driving under the influence and several weapons violations, police in Sunnyvale said in a statement.

Authorities said they received a report on Sunday night that Andrews was planning a mass shooting at the UPS facility in the city of Sunnyvale, near San Jose.