A man who struck and killed a Good Samaritan on the side of the road two years ago in DeKalb County was sentenced to 15 years in prison Wednesday.

Andrew Spencer, 32, struck Kleeon Cadogan as he was changing a tire along Interstate 20 near Panola Road in February 2014. Devon Witter, Cadogan's friend, was injured in the accident.

Spencer was convicted of hit-and-run, vehicular homicide and other charges in May, according to a release from the DeKalb County District Attorney’s Office.

Spencer tried to leave the accident, but another driver stopped him.

DeKalb County Superior Court Judge Tangela Barrie said Spencer may have kept going because he didn’t have insurance and the car wasn’t registered, according to Channel 2 Action News.

“It’s clear Mr. Spencer had a disregard for life,” Barrie said in a release.

Spencer’s mother Betty told the victims’ family members in court her son didn’t mean to cause the accident and asked for leniency. Her pleading didn’t sit well with Cadogan’s mother Kaylin Fox.

“He just hit him and kept going,” Fox said in court, according to Channel 2. “And for that I can’t forgive that.”

Fox asked for the maximum sentence. Cadogan’s friend, Jodi Decosta, agreed.

“Since that accident, my life went from like happy to turbulent,” Decosta said in court.

Spencer will serve out his sentence at the Georgia Department of Corrections, according to the release. He will also serve five years on probation.