Neil Prescott, the 28-year-old involved in a incident in late July, appeared in a Prince George's County courtroom Thursday in Upper Marlboro.
Although he was living in Crofton at the time of the incident, Prescott was ordered by a judge on Aug. 21 to remain with his parents at their Parkton home in Baltimore County.
The Baltimore Sun reported that Prescott appeared Thursday in Mental Health Court to provide an update on his progress outside of an inpatient facility, where he'd been since Anne Arundel County police took him into custody on July 23.
Prescott will now be under GPS monitoring and not have access to any guns despite a report presented in court that says he is "not a danger," according to The Sun.
He faces one count of telephone misuse related to threatening calls he allegedly made. The misdemeanor charge carries a maximum penalty of three years in prison and a $500 fine.
During a news conference on July 23, police said threatening calls were reported by an employee of Pitney Bowes in Prince George's County and a man was taken into custody after an arsenal of weapons was found in his Crofton apartment.
Prescott allegedly said, "I'm the joker, and I'm going to load my guns and blow everyone up."
Agents from Prescott's apartment, but further investigation revealed that he legally purchased the weapons. Maryland State Police said Prescott passed all background checks required to purchase firearms and his collector status was also properly applied.
The case received national media attention because it occurred days after a movie theater shooting in Aurora, CO, during a showing of a Batman movie where the alleged gunman also made a "Joker" reference.
Prescott is scheduled for another hearing on Sept. 11, according to online court records.