UPDATED 3:59 p.m.

A former Virginia Tech student pleaded no contest this morning to planting a homemade bomb in someone else's Blacksburg apartment in June.
 
Janaka Nuwan Kumara Siriwardena, 21, of Sterling cut a window screen to get inside the Orchard Street apartment, where he placed a homemade bomb and a bag full of a white substance. He then told Blacksburg police that he had been inside the apartment and seen those items.
 
Police searched the apartment and questioned the residents and found inconsistencies in Siriwardena's story. When police talked with him a second time, he confessed.
 
Siriwardena was found guilty this morning of manufacturing an explosive device, burglary and making a false police report. The white substance was thought to be cocaine so Siriwardena was charged with possession of a controlled substance, but that charge was dropped after the white powder was analyzed and found not to be a drug.
 
Siriwardena will be sentenced in April, after a background report has been completed.