California police say a UPS employee was arrested on Sunday after threatening a mass shooting at the company’s Sunnyvale location.
Authorities searched 32-year-old Thomas Andrews’ apartment and found more than 20,000 rounds of ammunition and several firearms, according to the Sunnyvale Department of Public Safety.
Authorities searched for Andrews after UPS reported that Andrews sent threatening text messages to his employer on Sunday night. When Sunnyvale patrol officers spotted his car, they attempted an enforcement stop, but Andrews kept driving for several miles.
Andrews surrendered after leading the officers in a vehicle pursuit down U.S. 101, according to Capt. Dan Pistor.
Police said they found “over 20,000 rounds of handgun and rifle ammunition, numerous high capacity magazines, 5 tactical style rifles, 1 shotgun, 3 handguns and body armor” at Andrews’ apartment.
Pistor also said that several tactical backpacks containing ammunition were staged at the front door of Andrews’ apartment.
According to the Associated Press, Pistor said Sunnyvale avoided a tragedy.
“He alluded to a mass shooting in his text messages,” Pistor said. “I definitely think we avoided a tragedy.”
“We are fully cooperating with law enforcement as they conduct their investigation,” Matthew O’Connor, senior manager of UPS, told the Daily Dot.
Andrews was booked into Santa Clara County Jail for criminal threats, evading police, driving under the influence, and several counts of weapons violations, Pistor said.
Pistor said Andrews was upset with his employer, but Pistor said he didn’t know the specifics of his grievances, according to the Associated Press.
Pistor said the investigation is ongoing.