Police have made an arrest after a man was observed accessing child pornography on a public library computer.

Police were called the Unionville branch of the Markham Public Library Friday following a complaint from library staff.

A man was arrested and police seized computer disks as well as the library computer for analysis.

David Pattison, 21, of Markham is charged with accessing child pornography and possessing child pornography.

He is scheduled to appear in Newmarket court Sept. 19.