A man who was serving time for the vehicular manslaughter deaths of a Redwood City couple, stemming from a 2022 street-racing incident with a teenager, was found dead over the weekend in his cell.25-year-old Redwood City resident Kyle Harrison was found unresponsive around 4:50 pm Sunday at the Mapl e Street Correctional Center in Redwood City, and the circumstances and cause of his death have not yet been shared. As NBC Bay Area reports via county officials, Harrison was found shortly after a routine safety check in the housing unit. Harrison was convicted in October and sentenced to eight years for the deaths of Grace Spiridon, 42, and husband Gregory Ammen, 44, after he and a teenage driver, Cesar Morales, began a street race on El Camino Real on November 4, 2022 that resulted in Morales's Mercedes striking the couple's Chevrolet Bolt, crushing it and launching it into the air. Spiridon and Ammen's twin seven-year-old daughters were in the backseat at the time, and miraculously survived.Harrison received the harsher sentence of the two, given that he was an adult at the time of the crash, and he fled the scene in his BMW, only to be arrested two weeks later.Morales, now 19, was convicted in December in juvenile court — he was 17 at the time of the crash — and sentenced to 90 days of home confinement.It was never entirely clear who instigated the race, but it may have been Harrison, who pulled up alongside Morales's Mercedes, and investigators say they mutually agreed to race when the light turned green. They reportedly reached speeds of up to 90 miles per hour before Morales's car struck the couple's Bolt at the intersection of Finger Avenue.It is likely, given the length of his sentence, that Harrison was scheduled to be transferred to state prison at some point soon.Harrison did not face a full trial, as he pleaded no contest to engaging in a speed race that resulted in death, and felony vehicular manslaughter. Hit-and-run charges were dropped.An attorney for the victims' family said in a statement, "This case arises from a brutal indifference to human life. The Bay Area has an epidemic of people who gamble with the lives of others by street racing."A GoFundMe for the orphaned twin girls has raised nearly $600,000.Previously: 25-Year-Old Redwood City Man Convicted In Street-Racing Collision Death of Peninsula CouplePhoto via Redwood City Police ...read more read less