San Jose Engineer Pleads Guilty to Bombing PG&E Transformers

SAN JOSE, Calif. – A California engineer pleaded guilty on Tuesday to bombing two Pacific Gas and Electric (PG&E) transformers, federal prosecutors said. Peter Karasev, 38, used homemade explosives in attacks that occurred in December 2022 and January 2023, leading to significant damage and power outages in the area.

The first explosion, near the Westfield Oakridge Mall, left nearly 1,500 residents without power for almost 16 hours. The second bombing, which hit the Plaza Del Rey shopping center, affected more residents and damaged a nearby building as well, prosecutors mentioned.

Investigators discovered a substantial cache of explosives at Karasev’s home following his arrest in March 2023. They found over 300 pounds of explosive precursor materials, hazardous chemicals, firearms, and remote detonation devices. This extensive collection prompted law enforcement officials to express concern over the potential destruction he could have caused.

Karasev admitted his actions were premeditated during a plea hearing. He now faces a possible prison sentence of 8 1/2 to 10 1/2 years, along with a restitution payment of at least $104,076.26 to cover damages. His sentencing is scheduled for August 19.

Acting U.S. Attorney Patrick Robbins praised law enforcement’s efforts in preventing further harmful acts. “There can be no mistake as to the extent of destruction that could have resulted,” Robbins said.

Karasev had initially pleaded not guilty to multiple federal charges in October 2023 before changing his plea. He also faces state charges related to the bombings and is set to appear in court in Santa Clara County in June.

At the time of his arrest, Karasev worked as a software engineer for a company focused on self-driving cars. His background raises questions about his knowledge and abilities concerning the explosives.

“Attacks on America’s critical infrastructure are serious threats to our nation’s security,” said Sue J. Bai, head of the Justice Department’s National Security Division. “With today’s guilty plea, the defendant admitted to putting thousands of lives at risk.”