The Columbia man arrested in connection with a bomb threat Tuesday afternoon in the 8600 block of Worn Mountain Way has been charged with manufacturing a phony explosive device.
Thomas M. Harman, 39, is to stand trial in October. He was released on his own recognizance.
If convicted, he could be sentenced to a year in jail and fined $1,000.
Court documents allege that Harman constructed the device using wire, a 9-volt battery, a gallon of brake fluid and a propane tank and that he then attached the wire to the doorknob.