WASHINGTON COUNTY, Md. (DC News Now) -- The Maryland State Fire Marshal (OSFM) said a Hagerstown man was arrested after he threatened to blow up a Maryland Vehicle Administration (MVA) building on Friday morning. At around 10:30 a.m., employees approached a Maryland State Police trooper working at the MVA on Colonel Henry K. Douglas Drive. They told him that 38-year-old Anthony Jacob Fritz, a coworker, told other employees that he was going to bomb the building. The trooper requested that the Bomb Squad and a canine team respond. Hit-and-run involved Metrobus in Montgomery County, police say K9 "Rosie" searched the building and did not find any explosives. Deputy State Fire Marshals assumed the investigation and Fritz was arrested. After searching his home on Kasinof Avenue in Hagerstown, the OSFM said they found 26 guns and 67 containers of ammunition. Fritz was taken to a hospital for a medical evaluation. He was charged with making a threat of mass violence and an arson threat.