BALTIMORE COUNTY, MD – More than four decades after 59-year-old Samuel Allen was fatally shot in his Liberty Road home, Baltimore County detectives have identified a suspect in the long-unsolved homicide thanks to a breakthrough in DNA technology.

With help from forensic DNA technology in partnership with Othram Inc. and the FBI's Sacramento genealogy team, a breakthrough finally came. The Sheriff's Office said a DNA comparison with a possible relative confirmed the victim as Danny Joe Jentzen, born July 8, 1954, from Flint, Michigan.

Robert Macedonio, attorney for Asa Ellerup, Rex Heuermann's ex-wife, joins "NewsNation Live" to discuss the recent developments in Heuremann's case, including cutting-edge DNA technology that prosecutors will introduce at trial.

Evidence derived from cutting-edge DNA technology that prosecutors say points directly at Rex Heuermann being the Gilgo Beach serial killer will be admissible at his trial, a Suffolk County judge ruled Wednesday.

The world's oldest DNA comes from a 2.4 million-year-old ecosystem in Greenland. Will scientists eventually sequence even older DNA?

For decades, gene-editing science has been limited to making small, precise edits to human DNA, akin to correcting typos in the genetic code. Arc Institute researchers are changing that paradigm with a universal gene editing system that allows for cutting and pasting of entire genomic paragraphs,