A man who police said was employed for over a year as a part-time teacher at an after-school program was arraigned on child pornography charges Friday.

Ian Silver-Eck, 20, of Revere was charged on one count each of possession of obscene material and possession of child pornography. He worked at “Build it Yourself,” a program which works with students throughout Massachusetts. 

Police said they found Silver-Eck after receiving a tip from the National Center for Missing and Exploited Children last December, and obtained his home address with an administrative subpoena.

RELATED: Merrimack College professor gets two years for child porn

Detectives said he admitted the images were on the hard drive and that forensics investigators later found a total of 23 images of alleged child pornography on the computer. 

A Suffolk County Court Judge imposed a $1,000 bail and several conditions on Silver-Eck, including wearing a GPS monitor, no contact with children under 18, and staying away from parks, schools, and his after school program. 

He must also stay away from the Internet. 

Silver-Eck is due back in court on May 20.