WJZ's Weijia Jiang that superintendent of the Maryland State Police has denied wrongdoing in a 14 month undercover investigation that spied on anti-war and anti-death penalty groups.

Colonel Terrence Sheridan conceded that the operation lacked good judgement but said, "We did nothing wrong."

As a part of the undercover surveillance, protesters were included in a terrorist database. A federal investigation is underway.

This video is from WJZ 13 Baltimore, broadcast July 25, 2008.

Download video