It wasn't immediately known if he has an attorney who could speak on his behalf.
Peter Karasev, 36, has been charged in a crime that caused a power outage that affected thousands of people in San Francisco, California. He is facing charges such as arson, exploding a destructive device, and destroying an electrical line. (Fox News)
Authorities on Friday searched Karasev's home and turned up explosive materials along with an "inactive" meth lab, police said.
No injuries were reported in the blasts on Dec. 8 and Jan. 5 that damaged two PG&E transformers, KGO-TV reported.
Karasev faces multiple charges including arson, exploding a destructive device, destroying an electrical line and possessing materials with the intent to create a destructive device, the Santa Clara County District Attorney's Office said.
Karasev made his initial court appearance on Friday and was ordered to return April 26. He’s being held without bail.