LAGUNA BEACH ( — The Orange County DA has filed charges against a man they suspect of dumping soiled adult diapers around Laguna Beach and Newport Beach.

Tomoo Kawai, 67, is scheduled to be arraigned Dec. 17.

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If convicted Kawai faces up to six months in jail and probation.

Kawai, of Newport Beach, was charged with disposing of prohibited waste unlawfully, a misdemeanor.

Officials in Orange County were puzzled this summer when bags of soiled diapers started showing up along the Pacific Coast Highway. The illegal dumping went on for months.

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In September, Laguna Beach police found a bag that also contained an envelope with an address on it.

They traced the bag and envelope to Kawai’s residence, according to authorities.

Officers stopped a man driving a Lexus who left the residence. They reportedly found a bag of adult diapers in the man’s passenger seat.

Kawai was arrested September 26.

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Officials said they couldn’t explain why Kawai didn’t throw the diapers away in his own trash can or hire a diaper service to retrieve them.