MINNEAPOLIS (AP) — Attorneys for a man authorities have called a person of interest in the 1989 kidnapping of Jacob Wetterling are trying to suppress evidence that led to his being charged with possession of child pornography.

Danny Heinrich, of Annandale, has pleaded not guilty. The 53-year-old is due to go on trial in July. But U.S. Magistrate Judge Leo Brisbois said at a hearing Wednesday that the date might get pushed back.

Heinrich is not charged in the disappearance of Jacob, who was abducted from near his home in St. Joseph. Heinrich has denied any involvement. But investigators found child porn in Heinrich's home when they searched it while pursuing leads in the kidnapping case.

Brisbois won't rule on suppressing evidence or moving the trial until after attorneys file more briefs.