Overview

• State Supreme Court Justice Timothy Mazzei ruled Tuesday that Rex Heuermann will be tried at once on all seven murder charges.
• He also denied the defense’s second attempt to exclude the advanced DNA findings developed by Astrea Forensics, reaffirming their admissibility.
• Prosecutors say the whole‑genome testing links Heuermann to six of the seven victims, while the defense contests the lab’s New York licensing.
• No trial date has been set, and Mazzei established Jan. 13, 2026 as the deadline for additional pretrial motions with the next court appearance in January.
• Suffolk County DA Ray Tierney says prosecutors are ready for trial and plan to call well over 100 witnesses from about 15 states and introduce millions of documents.