John Blaylock was found beaten to death in Griffith, Indiana, in 1981, but his killer was not known, according to police and the Chicago Tribune. Detectives resumed the investigation in 2018 and started to examine blood from an unknown man found at the scene of Blaylock’s killing, Griffith police said in a Nov. 12 Facebook post.

A father-son detective team in Griffith, Indiana, solved a 1981 cold case with the help of technology that wasn't around when the murder happened. Gregory Thurson was charged with the murder of 51-year-old John Blaylock.

Police in Griffith, Indiana said they have solved a 43-year-old cold case, thanks to technology that wasn't around when the murder happened.

More than 40 years after a man was murdered in northwest Indiana, police say they’ve caught the killer thanks to the work of detectives who are father and son.