A Suffolk County judge ruled Tuesday that prosecutors may use advanced DNA testing in the case against accused Gilgo Beach serial killer Rex Heuermann, delivering what officials called a major victory for the prosecution, as reported by The New York Post. Judge Tim Mazzei’s decision clears the way for Suffolk County District Attorney Ray Tierney to pursue a single trial for all seven murder charges tied to the Long Island case. “If I wasn’t confident in this case, I would’ve never brought it to trial,” Tierney told reporters following the ruling. pic.twitter.com/jdmoMC2ec4 — Laura Ingle (@lauraingle) September 23, 2025Defense attorney Michael Brown challenged the DNA evidence, calling it “magic,” and argued that his client should face separate trials for each murder. The decision marks the first time in New York state that such degraded DNA evidence has been cleared for use in a criminal trial.