The defense witnesses had been expected to start Wednesday. But spokesman Chuck Pelkie of the Will County state's attorney's office says that was put off until next Wednesday after attorneys met with the judge. He declined to say why.
In more than three weeks of testimony, prosecutors presented 68 witnesses at the hearing to determine what -- if any -- hearsay evidence will be allowed when Peterson goes on trial in the 2004 death of his third wife.
Attorneys for the former Bolingbrook police officer have said they intend to call 20 witnesses of their own.
Peterson has pleaded not guilty to first-degree murder in Kathleen Savio's death.