A woman is facing weapons charges after waving a knife at people in downtown Halifax on Friday night. Police say they were called to 3300 block of Barrington Street shortly after 7pm. When police arrived at the scene the woman went back inside her residence. She was eventually taken into custody about half an hour later. The 31-year-old woman has been charged with possession of a weapon, assault with a weapon, uttering threats and causing a disturbance.