After providing marijuana and alcohol to youngsters at a party for his daughter and stepdaughter, a Gwinnett County man molested a 14-year-old girl while she was asleep, police said.

Sean Williams is charged with aggravated child molestation and contributing to the delinquency of a minor.

Williams was known by his daughter’s and stepdaughter’s friends as someone who would regularly host parties at his Norcross home and provide drugs and alcohol, Officer Brian Pierson testified at a probable cause hearing Thursday.

After one party in March, a 14-year-old girl fell asleep in Williams’ bed while Williams was at work, Pierson said. The girl woke up to find the 44-year-old man performing oral sex on her, according to Pierson.

Williams later called 911 and claimed he was being threatened by the 14-year-old and her mother. He told the 911 operator that he had consensual oral sex with the girl at the party, under the impression she was 18.

Police could not interview the 14-year-old until May because she was believed to be a runaway, Pierson said. Williams was arrested on July 20 and has since been held in the Gwinnett County Jail without bond.

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Police said the man had one of the longest criminal records they've ever seen.

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