<p>A man wearing body armor detonated an explosive device inside a courthouse in Santa Maria, <a href="https://www.deccanherald.com/tags/california">California</a>, on Wednesday, injuring multiple people before he was arrested, authorities said.</p>.<p>The man, who authorities identified as Nathaniel McGuire, 20, of Santa Maria, entered the courthouse Wednesday morning to attend an arraignment for a July arrest on a firearms violation, said Santa Barbara County Undersheriff Craig Bonner.</p>.<p>McGuire threw a bag at the screening station, causing an explosion in the hallway that injured several people. He then ran to a parking lot where law enforcement officers detained him. McGuire was wearing body armor under his jacket and was not injured, authorities said.</p>.<p>The FBI and local authorities said it was an isolated event and not tied to terrorism. </p>.Los Angeles bus hijacking: One killed by gunman during high speed chase.<p>McGuire is being held without bail on charges including attempted murder, using an explosive device in attempting to kill someone, and possession of explosive devices.</p>.<p>The sheriff's office is also working with the Santa Barbara County Fire Department to investigate whether McGuire is linked to several recent arsons, Bonner said.</p>.<p>According to Bonner, the sheriff's office received a report of an explosion at 8:48 a.m. local time at the Santa Maria Court Complex near the courtroom where arraignments take place and where McGuire was set to appear Wednesday.</p>.<p>The court compound was evacuated, as well as nearby homes, businesses and a school, authorities said. The City of Santa Maria said that its City Hall, finance department, city attorney's Office, public library and recreation and parks department would reopen Thursday.</p>.<p>Six people were treated at and released from Marian Regional Medical Center in Santa Maria on Wednesday, said Joe Bailey, a spokesperson for Dignity Health, which operates the hospital. They are believed to be bystanders and not court employees, said Darrel Parker, the court's executive officer.</p>.<p>Adrian Paris, a lawyer at a San Diego-based firm, was in the gallery of a courtroom in the complex when he heard a loud bang.</p>.<p>"It was an explosion of some kind," Paris, 36, said in a telephone interview Wednesday night. "That explosive pop, it's really distinct. There's no other way to describe it."</p>.<p>A few seconds later, the building's alarms started blaring, there was loud chatter on the court bailiff's walkie-talkie and everyone was led out of the building.</p>.<p>As Paris left he heard shouting and saw a jacket on the ground that had "fire and smoke coming off of it," he said.</p>
<p>A man wearing body armor detonated an explosive device inside a courthouse in Santa Maria, <a href="https://www.deccanherald.com/tags/california">California</a>, on Wednesday, injuring multiple people before he was arrested, authorities said.</p>.<p>The man, who authorities identified as Nathaniel McGuire, 20, of Santa Maria, entered the courthouse Wednesday morning to attend an arraignment for a July arrest on a firearms violation, said Santa Barbara County Undersheriff Craig Bonner.</p>.<p>McGuire threw a bag at the screening station, causing an explosion in the hallway that injured several people. He then ran to a parking lot where law enforcement officers detained him. McGuire was wearing body armor under his jacket and was not injured, authorities said.</p>.<p>The FBI and local authorities said it was an isolated event and not tied to terrorism. </p>.Los Angeles bus hijacking: One killed by gunman during high speed chase.<p>McGuire is being held without bail on charges including attempted murder, using an explosive device in attempting to kill someone, and possession of explosive devices.</p>.<p>The sheriff's office is also working with the Santa Barbara County Fire Department to investigate whether McGuire is linked to several recent arsons, Bonner said.</p>.<p>According to Bonner, the sheriff's office received a report of an explosion at 8:48 a.m. local time at the Santa Maria Court Complex near the courtroom where arraignments take place and where McGuire was set to appear Wednesday.</p>.<p>The court compound was evacuated, as well as nearby homes, businesses and a school, authorities said. The City of Santa Maria said that its City Hall, finance department, city attorney's Office, public library and recreation and parks department would reopen Thursday.</p>.<p>Six people were treated at and released from Marian Regional Medical Center in Santa Maria on Wednesday, said Joe Bailey, a spokesperson for Dignity Health, which operates the hospital. They are believed to be bystanders and not court employees, said Darrel Parker, the court's executive officer.</p>.<p>Adrian Paris, a lawyer at a San Diego-based firm, was in the gallery of a courtroom in the complex when he heard a loud bang.</p>.<p>"It was an explosion of some kind," Paris, 36, said in a telephone interview Wednesday night. "That explosive pop, it's really distinct. There's no other way to describe it."</p>.<p>A few seconds later, the building's alarms started blaring, there was loud chatter on the court bailiff's walkie-talkie and everyone was led out of the building.</p>.<p>As Paris left he heard shouting and saw a jacket on the ground that had "fire and smoke coming off of it," he said.</p>