San Francisco ? One-time JonBenet murder suspect John Mark Karr rejected a deal from prosecutors that would have freed him on probation in exchange for a guilty plea on child pornography charges, his attorney said Thursday.

“My client has maintained his innocence throughout these proceedings, and he is not going to plead guilty to a crime that he did not commit,” Karr’s attorney, Robert Amparan, told the San Francisco Chronicle. “We have no intention of accepting that offer.”

The deal, presented Tuesday, would have waived three of the five misdemeanor child pornography possession charges against Karr if he pleaded guilty to the two remaining ones. He would get credit for time served, would be placed on probation for three years and would be required to register as a sex offender.