OAKLAND (BCN)—A motorcycle mechanic accused of fatally shooting a woman in East Oakland last year was convicted by an Alameda County Superior Court jury today of first-degree murder.

Michael Herbert Horace, 64, was convicted for the killing of 51-year-old Tass Jackson in the 1200 block of 46th Avenue at about 1 a.m. on April 29, 2015.

The jury, which deliberated for a day, found Horace guilty of murder and other charges for the shooting. He will face 50 years to life in prison when he is sentenced on Sept. 2.

Horace’s defense attorney William DuBois told Judge Jon Rolefson after the verdict this afternoon that he plans to file a motion for a new trial.

Prosecutor Peter McGuiness said during closing arguments in the trial earlier this week that cellphone records showed Horace was at the scene of the shooting, contradicting his testimony that he was working at his motorcycle shop when Jackson was shot.

DuBois said during his closing argument that four people who know Horace testified that he was working at his motorcycle shop at the time of the shooting and that no clear motive was established.

Oakland police had said the shooting may have resulted from an earlier argument between Horace and Jackson.

McGuiness said two witnesses saw the shooting and testified that Horace was the shooter.