Police in Canada have made a significant breakthrough in solving cold cases from the 1970s using DNA evidence. Through meticulous investigation and cutting-edge forensic techniques, authorities have linked Gary Allen Srery, a deceased convicted sex offender from the United States, to the brutal killings of two women and two teens. Police are now investigating the possibility of additional unsolved homicides or sexual assaults in western Canada that could be connected to Srery.

The victims, Eva Dvorak and Patricia "Patsy" McQueen, both aged 14, as well as Melissa Rehorek, 20, and Barbara MacLean, 19, met tragic ends between the years 1976 and 1977. Their lifeless bodies were discovered in or around the city of Calgary, Alberta, leaving their families and the community devastated.

Canadian law enforcement agencies worked in collaboration with their American counterparts to gather DNA evidence that would help unravel the mystery of these cold cases. Using advanced forensic technology, authorities were able to establish a definitive link between the deceased Srery and the crimes committed half a century ago.

Though Srery passed away in 2011, this breakthrough offers closure for the victims' families, who have held onto hope for justice for decades. It also provides an opportunity to reexamine other unsolved cases in the region for potential connections to the convicted sex offender.

Authorities believe there may be more victims and undisclosed crimes yet to be discovered. Investigators are urging anyone with information that could be helpful to come forward, as every piece of information could be critical in uncovering the truth surrounding these heinous acts.

The cold case breakthrough serves as a reminder of the importance of forensic advancements and collaboration in solving unresolved crimes. As technology continues to evolve, authorities are given renewed hope in their ongoing pursuit of justice, offering solace and closure to the loved ones left behind.

The investigation into the unsolved homicides and sexual assaults connected to Gary Allen Srery's crimes will continue as law enforcement agencies strive to bring justice to any additional victims and their families impacted by these haunting crimes from the past.