WEST SPRINGFIELD, Mass. (WWLP)— An anonymous tip, a partial fingerprint, and an application for a taxicab license led to an arrest in a cold case double homicide that has been a mystery in western Massachusetts for nearly 46 years. Skimming devices found at Springfield convenience stores, suspects sought In a news conference Wednesday, Hampden County District Attorney Anthony Gulluni announced the arrest of Timothy Scott Joley of Clearwater, Florida in the 1978 murders of Theresa Marcoux and Mark Harnish in West Springfield. Around 9:30 a.m. on November 19, 1978, the bodies of 18-year-old Marcoux of East Longmeadow, and 20-year-old Harnish of South Dennis, were found outside Harnish’s 1967 Dodge pickup truck, which was parked in a rest area off Route 5. Both victims had been shot multiple times apparently at close range, with a .38 caliber weapon. Investigators believed the victims were inside Harnish’s truck when they were shot, and their bodies had been later removed from the vehicle. PHOTOS: West Springfield Cold Case Theresa Marcoux and Mark Harnish (Credit: Hampden DA)Timothy Joley (Courtesy: Hampden DA)Timothy Joley (Courtesy: Pinellas County Sheriff's Office) After hearing the news of the couple’s death, a nearby resident reported to police hearing what they thought to be gunshots at around 4:00 the morning of November 19, 1978. The witness had never actually heard gunshots before however, and convinced alongside their ex-partner they were just hearing things, did not report it right after it happened. Anonymous Tip According to the probable cause statement of facts filed in the case, a fingerprint was found on the passenger-side vent window of Harnish’s truck that did not match either of the victims. The print was in a reddish-brown substance that appeared to be blood. In the late 1990s, this print was run through the Massachusetts Automated Fingerprint Identification System (AFIS) database, as well as manually checked against about 70,000 ten-print cards, but no match was found. Screening tests for the presence of blood confirmed that there was indeed blood on the passenger-side vent window, but due to the small sample size, it could not be further tested to determine whether the blood was human. Decades passed until a breakthrough in the case last month. The DA’s office was contacted by an individual who claimed a now-deceased friend told them that Joley was involved in the killing of two people on Route 5 in West Springfield in 1978. The witness told police that after hearing about the murders on the news, their friend told them “That was Timmy (Joley)”. The witness told police that they and their friend had never spoken about this again. VIDEO: DA News Conference State Police assigned to the DA’s office requested to Springfield police that they receive Joley’s fingerprint identification card, which the department had on file.  Joley had been fingerprinted in 2000 when he applied for a taxicab license. A state police print examiner identified the print as coming from Joley’s left thumb. A check of firearms records revealed that Joley had purchased a Colt handgun one month before Marcoux and Harnish were killed. Joely was arrested in Clearwater, Florida on November 5, and is being charged with murder. Local News Headlines Family First Trust in Rhode Island claims $1M Massachusetts lottery ticket Stop & Shop inventory across Massachusetts impacted due to cybersecurity issue Woman caught shoplifting nearly $4,000 worth of merchandise in Enfield Mail covered in white powder discovered in Springfield WWLP-22News, an NBC affiliate, began broadcasting in March 1953 to provide local news, network, syndicated, and local programming to western Massachusetts. Watch the 22News Digital Edition weekdays at 4 p.m. on WWLP.com.