Updated Nov. 2.

A judge ruled that there was enough evidence to charge a 24-year-old woman with felony criminal sexual assault after police allegedly caught her naked with a 15-year-old boy in a car at Northbrook's Wood Oaks Green.

At a court date Oct. 27, charges against the Northbrook woman, Na Yun Choi, were superseded to a felony and a public defender withdrew in place of a private lawyer she had hired. Her next court date is Nov. 15.

Updated Oct. 21.

A 24-year-old Northbrook woman is charged with criminal sexual assault after police caught her naked with a 15-year-old boy in a car in Wood Oaks Green.

According to court documents, Na Yun Choi, was the boy’s bible study teacher.

An officer was conducting a routine patrol of the park when he noticed a vehicle with steamed up windows and its lights off around 8 p.m. Saturday, Oct. 15, according to a police report of the incident.

Police arrested Choi after both she and the 15-year-old boy admitted to having sexual contact, according to the police report. 

A bond hearing was held Monday, Oct. 17, in Skokie Circuit Court. Bond was set at $15,000 with the condition that Choi not contact the victim. She was released on bail the same day.

Choi’s next court date is set for Oct. 27.