Joe Pomilla said after Charlotte ABC affiliate WSOC-TV went back on the air Tuesday that a security guard approached the woman and she pulled a gun and put it to her head. He says the guard got out and someone called police.
He says the building was locked down and employees told to leave.
Pomilla says the woman was distraught over something but not angry with the station. He says she felt it was a place she could speak her mind.
The woman was later taken into police custody. Her identity was not immediately available.