California- John Mark Karr, who confessed to the 1996 JonBenet Ramsey murder but was cleared by DNA evidence, is expected to be arraigned on child pornography charges on Wednesday in a Sonoma County courtroom.

Karr’s arrival at Oakland International Airport late Tuesday was greeted with considerably less fanfare than his touchdown in Los Angeles last month after he’d been arrested in Thailand for allegedly killing JonBenet.

Witnesses said Karr, 41, quickly exited a commercial flight, walked down the tarmac and left the airport in a vehicle with tinted windows. He is being held at the Sonoma County jail in Santa Rosa and is scheduled for arraignment at 8:30 a.m. Wednesday.

Earlier Tuesday, Boulder County authorities released Karr, who had been held in Colorado for about two weeks. On Aug. 28, Karr was released from custody in Boulder, but promptly re-arrested after officials in Sonoma County, Calif., faxed over paperwork saying they wanted to extradite him to California to face child pornography charges.

The former schoolteacher had been charged with five counts of possessing child pornography in Sonoma County in 2001, but skipped bail, fled the country and never stood trial.