A convicted sex offender accused of working under an assumed name around children at a public library may have taught as a substitute teacher in Stark County.

Jason Mazan, 34, who went by a fake identity as Jason Drake, was a certified teacher who — just a year before his crime — was on a list of substitute teachers for school districts in Stark County.

Ohio Department of Education records show he held a "one-year, long term substitute teaching license" until January 2013. The license was permanently revoked because of his 2012 conviction for one felony count of attempted sexual battery, one felony count of attempted unlawful sexual conduct with a minor, and one misdemeanor count of falsification.

He had been granted the license in 2010 for teaching in drama or theater. The records also show he was granted a one-year, long-term substitute teaching license for grades ranging from preschool to 12th grade in 2011 for Stark County.

"He was on our substitute list in 2011-2012, but that's the last time he was on our list," said Tammy Hurst, director of business for the Stark County Educational Service Center.

Hurst said she did not know whether Mazan actually had been teaching at a school in Stark County because, until two years ago, the district did not keep a list of substitute teachers.

But to find out whether he worked in schools in Stark County in 2011 and 2012, anyone inquiring would have to call every district in the county.

A 2003 Green High School graduate, Mazan was a substitute teacher working at the school in 2012 in the theater program when he was found behind a dance studio with a partially clothed 14-year-old girl. He was convicted of sex charges, labeled a sex offender with requirements to register his address and sentenced to prison.

Since his release, however, he has used a fake name to find employment —, primarily demonstrating the use of special effects makeup at entertainment-related events.

Authorities say Mazan worked at seven events over more than two years at the North Canton Public Library. A library spokeswoman said he was not an employee but was a paid presenter at events that involved working with children and teens. The library was not aware that he was a registered sex offender until a participant recognized him Nov. 17.

The Stark County Sheriff's Office conducted an investigation and Mazan was arrested Wednesday on felony charges of obstructing official business and failure to notify authorities of his change of address. He remained in jail Friday, held in lieu of $100,000 bond pending court hearings.