Overview

• State Supreme Court Justice Timothy P. Mazzei ruled that all seven murder charges against Rex Heuermann will be tried together, rejecting the defense bid for multiple trials.
• Mazzei reaffirmed that nuclear whole‑genome DNA evidence processed by Astrea Forensics is admissible, denying defense claims that the lab’s lack of New York health permits bars its use.
• No trial date was set, and the court ordered the defense to file any additional pretrial motions by Jan. 13, 2026.
• Prosecutors say the case will feature more than 100 witnesses from 15 states and about 6.5 million documents, citing overlapping evidence including hairs on belts, tape and burlap and a recovered planning document.
• Heuermann remains in custody and has pleaded not guilty, while his attorneys plan new challenges to search warrants and grand jury presentations.