An Idaho Falls man has pleaded not guilty to a charge that he poured gasoline down a storm drain in an Idaho Falls residential area, causing an explosion that resulted in about $15,000 damage to city sewers and reportedly blew manhole covers 100 feet in the air.

Duane Friesen, 39, pleaded not guilty last week in Bonneville County Magistrate Court. Trial was scheduled Jan. 17, and he was released on personal recognizance.An explosion was reported in the 800 block of Escalante at 3:27 p.m. Dec. 17. Police and firefighters found smoke coming from storm sewer openings and residents replacing manhole covers.