A Fairfax County jury convicted a Springfield man of second-degree murder for killing his ex-girlfriend’s fiance during an argument last October, Assistant Commonwealth Attorney Brandon Shapiro said.

The jury recommended a sentence of 28 years in prison for 26-year-old Manuel Felipe Garces, who beat and stabbed Mark Earl Ives, 30, of the Alexandria section of Fairfax County, to death on Oct. 6.

The two had traveled to the District with Garces’s ex-girlfriend to buy heroin that day, according to testimony. Garces and Ives got into a fight in the street after they arrived back at the ex-girlfriend’s home in the 5400 block of Broadmoor Street. Garces punched and stabbed Ives to death, according to testimony.

During the trial, Garces testified that he was acting in self-defense. He said Ives was strangling him during their argument and he feared he might die.

Garces is scheduled to be sentenced in Fairfax Circuit Court on July 26. A judge could keep the jury’s recommended sentence or lower it, but not increase it.