AURORA, Colo. (KDVR) — The Aurora Police Department announced Saturday morning that a man has been arrested and charged in connection with two recent explosions. The arrest comes after local and federal law enforcement officers were at the suspect’s house for hours Friday night.

According to APD, Scott Alan Campbell, 44, was arrested 11 p.m. Friday at his home at 3563 S. Uravan St. He is charged with attempted first-degree murder, first-degree arson and possession of a weapon by a previous offender.

After hearing the news of his arrest, Campbell’s neighbors had mixed feelings about him.

“Shocked, you never know people you associate with,” neighbor Andy Starrett said, adding “To finally see the news this morning, that he’s charged, it is kind of like a disbelief type of situation because he was always busy working and building and making artwork and furniture and it’s like wow, you just never know.”

“He’s been a roommate over there, he’s been there for about 9 months,” another neighbor who does not wish to be identified said. “Up all hours of the day and night, doesn’t say very much just keeps to himself.”

Campbell is being held at the Aurora jail on a $1 million bond.

The explosions occurred on Dec. 25 and Jan. 7.

The Christmas Day explosion happened about 5:30 a.m. People living near the 18000 block of East Mansfield Avenue reported hearing the device going off. Two homes were damaged.

The Jan. 7 blast occurred about 4:45 a.m. in the 4600 block of South Pagosa Circle. That’s about a mile from the first event. One home was damaged in the second explosion.

The case is being investigated by APD, the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), and Aurora Fire Rescue. They are among the agencies in the Regional Anti-Violence Enforcement Network (RAVEN).

The 18th Judicial District Attorney’s Office will prosecute the case.