Police in Santa Barbara, California, identified the suspect arrested for throwing an explosive device inside a city courthouse, saying he may be connected to previous arson acts.

Police arrested 20-year-old Nathaniel McGuire just moments after he allegedly threw his backpack into the Santa Maria courthouse and it exploded, injuring five people.

“Immediately after throwing the backpack, McGuire ran to the southeast parking lot where he was detained by a court security officer, a Sheriff’s Deputy and CHP Officers as he tried to enter his red sedan. McGuire was alone when he was apprehended and was wearing body armor underneath a jacket. He did not have any physical injuries from the explosion,” police said in a statement.

Police say McGuire’s motive stemmed from a previous arrest for having an unregistered firearm. He was due in court the morning of the incident.

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“Detectives are working with SBC Fire investigators to explore if the suspect is associated with several recent arson fires, and they are in the process of serving search warrants for McGuire’s car and home,” police said.

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McGuire has been booked at the Northern Branch Jail for felonies including attempted murder, manufacturing an explosive device and use of an explosive device for attempted murder.

Investigators say they don’t currently believe McGuire’s attack was part of a wider conspiracy.

Nathaniel McGuire, 20, is being investigated for any connections to recent arson fires in Santa Barbara, California. (Santa Barbara Police)

“Although this is an ongoing investigation and we are exploring all possible angles, at this point in time, we believe this to be a local incident committed by a local individual, with a local grievance stemming from his arrest. We are not absolutely ruling out that there is something larger at play, but at this time we believe this is a local matter that has been safely resolved and there are no outstanding community safety concerns,” a police spokesperson said.

None of the five people hit by the explosion faced life-threatening injuries, police say. Four were transported directly to the hospital from the scene, and the fifth traveled to the hospital on their own.

The victims were treated for injuries including burns, and they have now all been released from the hospital.

The biggest storyline surrounding the San Francisco Giants heading into the offseason is whether or not they will keep Farhan Zaidi after missing the playoffs again. Zaidi has spoken about it, but recently a former coworker of his came to his defense. On a local Bay Area radio show, Oakland Athletics executive, Billy Beane, went to bat for Zaidi.

Zaidi worked under Beane from 2011 until 2014, where the Giants President of Baseball Operations worked his way up to assistant general manager before he left for a job with the Los Angeles Dodgers. The Oakland legend had nothing but nice things to say about Zaidi and his time working with him.

“I’m obviously a little biased. I adore Farhan; he’s brilliant … there’s no funnier, warmer, more enjoyable person to be around, and so in that sense — and listen, I’ve worked with this guy. This guy is really, really smart, very smart. He cares so much. … When Farhan left [the A’s] to [work with] the [Los Angeles] Dodgers, I think my kids cried. I mean, that’s how much they adored [him]. My wife felt the same way,” he said while on the ‘Murph & Markus’ show on KNBR.

While in college, Zaidi read the book ‘Moneyball’ and was so inspired that he applied to work for the A’s, and then worked himself up from there. He was Beane’s right hand man during his time there and Beane thinks that he wouldn’t be jobless for long should he be fired.

“Here’s what I would say: If that man’s a free agent [this offseason], there will be no shortage of people who would love to have him with them. You’re asking the wrong person … because I’ve been with this guy. He’s brilliant. He’s a wonderful human being, and so am I biased? Maybe. But also, objectively, I’ve seen this guy work,” he continued.

When the Giants nabbed Zaidi from the Dodgers, it was considered a great hire. Even a couple years in, when San Francisco won 107 games, he was praised. However, that has been in for his time with the Giants.

There are things have led to where Zaidi is at, such as the team not playing their youngsters, that has caused some of the frustration.

All that being said, his track record will almost guarantee that he gets another front office job quickly, as Beane said. Now, it’s time for the San Francisco brass to make a decision.