The man who pleaded guilty to attacking Unwritten Law guitarist Steve Morris with a pair of homemade bombs in September will spend nearly a year in jail.

A San Diego judge is expected to sentence 22-year-old Martel Duvigneaud to 240 days in jail at a sentencing hearing on December 12, according to San Diego County Deputy District Attorney Anthony Campagna.

By pleading guilty to a lesser charge of assault with a deadly weapon in the September attack — during which Duvigneaud hurled two dry-ice bombs at Morris' apartment as part of an ongoing dispute over noise — Duvigneaud was spared conviction on more serious charges. The computer programmer will still have a felony "strike" on his record in the "three-strikes" state. During his Tuesday court appearance, Duvigneaud apologized to Morris for the attack, saying, "What I did was wrong. I'm very sorry I did it. I feel horrible about it."

Morris, his girlfriend, a sheriff's deputy and a security guard were injured in the attack, which caused Unwritten Law to cancel four concerts while Morris recuperated from a concussion and damage to his eardrums and arms.

The explosives, made of dry ice packed into a plastic soda bottle, were thrown at Morris' front door and onto his balcony. When the latter failed to detonate, Morris put it into his freezer as evidence to show his landlord.

After the second bomb detonated outside his front door, Morris called police and a security service. Officials asked to see the first device, which exploded in the hands of the security guard (see "Unwritten Law Guitarist Injured In Alleged Bomb Attack").

Duvigneaud lived below Morris and his girlfriend in a Southern California apartment complex and had complained about noise the couple made while walking around, according to court records. Both men had been told by the complex's staff to avoid further contact before the incident occurred.