A Villanova University history professor has been charged with child pornography after the university contacted police.

Sixty-year-old professor Christopher Haas waived his right to a preliminary hearing in Delaware County on Thursday. He remains in custody on $50,000 bail.

Radnor police Lt. Andrew Block says hundreds of images were found. He says Haas also is the subject of a similar 2012 federal probe.

Defense lawyer Scott Godshall says the federal case was closed without charges. He calls Hass' Monday arrest "a terrible day for a great school and a great professor."

Villanova spokesman Jonathan Gust says the university was unaware of the federal investigation. He says Haas is banned from campus. He says the university contacted police after security noticed suspicious activity on a computer in a common area.