Authorities said they later found ammunition, a rifle, a suspected bomb, fireworks and 10 Molotov cocktails inside his car.

Nathaniel McGuire is charged with a bomb attack at a Santa Barbara courthouse, potentially facing 7 to 40 years in prison.

LOS ANGELES (AP) — Federal authorities have charged a California man in a courthouse bomb attack that injured five people. Nathaniel McGuire, 20, has been charged with maliciously damaging a building with an explosive, the U.S. Attorney’s Office in Los Angeles said in a statement. He is expected to appear in federal court in Los Angeles on Friday.

Nathaniel James McGuire, 20, allegedly arrived with a homemade bomb at Santa Barbara Superior Court ahead of his arraignment in another case

When law enforcement searched the suspect's home, they found an empty can with nails glued to the outside, a bag containing matches, black powder and fireworks, federal prosecutors said.

Several people are hurt and the superior courthouse in Santa Maria, California, is closed following “a bomb explosion” Wednesday morning, officials say.

Suspect arrested for courthouse explosion in Santa Maria, California, allegedly planned to target deputies and judge.

The 20-year-old man who allegedly detonated an explosive inside a Santa Barbara County courthouse Wednesday morning.

A man accused of setting off an improvised explosive device in a California courthouse, injuring at least five people and causing “significant and noticeable damage,” intended to kill deputies and a judge,

A 20-year-old man was detained following the explosion that was reported shortly after 8:45 a.m. at the Santa Maria Courthouse in Santa Maria, sheriff’s officials said.