Santa Maria Man Pleads Guilty to Courthouse Bombing, Faces Life in Prison
Nathaniel McGuire, 22, admitted to detonating a bomb at a Santa Barbara County courthouse in 2024, injuring three. He planned to kill deputies and a judge.
Santa Maria Man Admits to Bombing Courthouse in Retaliation for Firearm Seizure
A 22-year-old Santa Maria man has pleaded guilty to bombing a courthouse in Santa Barbara County, California, in an attack that injured three people and caused roughly $35,000 in structural damage. DOJ Justice News reports that Nathaniel James McGuire admitted to detonating the device on September 24, 2024, intending to kill sheriff's deputies and a judge in retaliation for local law enforcement seizing his firearms earlier that year.
McGuire pleaded guilty to one count of use of a weapon of mass destruction and one count of malicious destruction of a building using an explosive. He has been held in federal custody since September 2024.
According to his plea agreement, McGuire entered the Santa Maria courthouse — which serves the Santa Barbara County Superior Court — and threw a backpack containing an explosive device past the security screening station toward sheriff's deputies. The bomb slid between a victim's legs before detonating outside a courtroom. Five people were hospitalized, all released the same day; three sustained injuries formally recorded in the case.
After the explosion, McGuire returned to his vehicle to retrieve two long guns and ten Molotov cocktails. He intended to re-enter the building to kill sheriff's deputies and, in his own words, "splatter" a judge. A courthouse security guard and multiple law enforcement officers intercepted him at the vehicle.
A search of McGuire's residence later yielded additional bomb-making materials. He admitted to targeting the judge and deputies specifically because of their status as government officials, and to acting in retaliation for what he described as government wrongs, including the earlier seizure of his firearms by Santa Barbara County sheriff's deputies.
"McGuire launched a vicious, terroristic assault on a court of law with the intent to kill law enforcement officers and a judge," said Assistant Attorney General for National Security John A. Eisenberg. "His attack injured three people and, were it not for the quick action of court security and law enforcement, it could have been far worse."
First Assistant U.S. Attorney Bill Essayli for the Central District of California added that individuals who use bombs against law enforcement officials and judges "must be held accountable and face severe punishment for their actions."
The courthouse sustained approximately $35,000 in damages and had to close for several days following the attack.
McGuire is scheduled to be sentenced on March 1, 2027, and faces a maximum penalty of life in prison.
The FBI's Joint Terrorism Task Force, the Santa Barbara County Sheriff's Office, and the Santa Maria Police Department are investigating the case. Assistant U.S. Attorneys Mark P. Takla and Kathrynne N. Seiden for the Central District of California are prosecuting, with assistance from Assistant U.S. Attorney Alexander Su and Trial Attorney Patrick Cashman of the Counterterrorism Section of the Department of Justice's National Security Division.
Source: DOJ Justice News