In this still image from video provided by KEYT, people walk past a police barricade following an explosion at the Santa Maria Courthouse in Santa Maria, Calif., Wednesday, Sept. 25, 2024. (KEYT via AP)

In this still image from video provided by KEYT, law enforcement work on a scene following an explosion at the Santa Maria Courthouse in Santa Maria, Calif., Wednesday, Sept. 25, 2024. (KEYT via AP)

In this still image from video provided by KEYT, people gather following an explosion at the Santa Maria Courthouse in Santa Maria, Calif., Wednesday, Sept. 25, 2024. (KEYT via AP)

This undated photo, provided by the San Barbara County Sherif's Office, shows Nathaniel McGuire, who was arrested for exploding and improvised explosive device at the Santa Maria Courthouse, Calif., Wednesday, Sept. 25, 2024. (Santa Barbara County Sheriff's Office via AP)