A man arrested in the Friday explosion in a house west of Memorial Park is suspected of producing the explosives and marijuana concentrate, arrest records show.
Edward Kiley, 63, was seen leaving his home at 750 E. Vermijo Ave. when police arrived to investigate reports of an explosion.
Kiley told officers he was in his house when an item was thrown through a window and landed under a desk, his arrest affidavit shows. He said he heard a "pop," and then the ceiling collapsed.
Although Kiley refused to let police inside, officers said they needed to ensure that no injured or endangered people were there.
During their sweep, records say, they noted that the ceiling had collapsed and the living room windows had blown out, signs "consistent with an explosion."
Firefighters found "common objects that can be used in the production of explosives" as well as a BB handgun and two rifles, the affidavit said.
After extracting the sections of fallen ceiling, officers found marijuana concentrate residue, an unspecified amount of marijuana and five empty butane cans. Butane honey oil also was in the freezer.
In Kiley's car, police said, they found a "possible pipe bomb" and what looked like an M-Series explosive device, records show.
Kiley was taken to a hospital for minor injuries. He later was released on $10,000 bond from the El Paso County jail.
No one else was injured in the blast, which damaged his house but no other structures, police Sgt. Chris Arseneau said.
Kiley was arrested on suspicion of extraction of marijuana concentrate, hazardous substance incidents, possession of explosive devices and possession of a weapon by a previous offender.
He was sentenced in 2013 to four years in prison after pleading guilty to explosives charges for making fireworks at home in what he described to police as a hobby.
He faced up to 60 years behind bars until accepting a plea agreement that required him to serve up to six years.