Decades after a double homicide case in Western Massachusetts went cold, an unexpected tip has led to an arrest, officials announced Wednesday.

A man has been arrested in connection with a 1978 double murder after investigators found his fingerprint on a decades-old taxi license application, authorities have said

The case began on Nov. 19, 1978, when police discovered Theresa Marcoux, 18, and Mark Harnish, 20, shot dead near Route 5 in West Springfield, Hampden District Attorney Anthony Gulluni said. PHOTO: Theresa Marcoux, 18, and Mark Harnish, 20, were found shot ...

Theresa Marcoux, 18, and Mark Harnish, 20, were found shot to death on the morning of Nov. 19, 1978 at a rest stop in West Springfield after a police officer spotted Harnish’s empty pickup truck splattered with blood inside and out, according to Hampden ...

On Nov. 19, 1978, police discovered Theresa Marcoux, 18 and Mark Harnish, 20, shot to death near Harnish's 1967 green Dodge pickup truck near Route 5 in West Springfield, according to Hampden District Attorney Anthony Gulluni.

Police have made an arrest in the West Springfield murders of 18-year-old Theresa Marcoux and 20-year-old Mark Harnish, who were found shot to death in 1978.

Authorities in Massachusetts said a 71-year-old man has been arrested and charged with murdering two people nearly 46 years ago, bringing a close to the cold case.

A fingerprint has led to the arrest of a Florida man in connection with the murders of Theresa Marcoux and Mark Harnish in West Springfield in 1978.

Authorities say they're one step closer to solving a decades-long cold case. Timothy Scott Joley, 71, has been arrested for the 1978 murders of Theresa Marcoux, 18, and Mark Harnish, 20.