Thirty-five years after a man and his adult son were found with their throats slashed in their Connecticut home, a longtime suspect was convicted Tuesday in the killings, prosecutors said.

Willie McFarland was found guilty of murder in the deaths of Fred and Greg Harris, New Haven prosecutors said.

"Today’s jury verdict is the result of a 35-year quest by dedicated investigators and prosecutors who never gave up their search for justice for the victims of these horrendous crimes," State's Attorney John Doyle Jr. said in a release.

CT POLICE OFFER REWARD FOR INFO ON SUSPECT IN 11-MONTH-OLD'S MURDER

Messages were sent to McFarland's lawyers. The 55-year-old faces sentencing Jan. 31.

Connecticut news

A man has been arrested for a double homicide that occurred in 1987.

Fred Harris, 59, and Greg Harris, 23, were found, dead and bound, in their Hamden home on Aug. 27, 1987.

UNDERCOVER CONNECTICUT POLICE OFFICER GRAZED BY GUNSHOT

McFarland quickly became a suspect and was questioned soon after the killings. But for years, authorities had no physical evidence to link him to the crime, though they continued to look, conducting DNA testing around 2006.

Then, in 2018, a new round of DNA testing on a glove found at the scene found that it was "at least 1.5 million times more likely" than not that McFarland was one of four contributors, authorities said at the time.

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He was arrested in 2019.