Incident from Sydney, Australia.

The footage shows a 28-year-old woman holding down a 13-year-old boy, waving a knife around and yelling “I’m going to kill someone” and repeatedly declaring she is an “ice addict”.

Police officers approached the woman from the front, while one officer came in from behind her to pull her off the teen, dragging her away before three other officers hold her to the ground.

The woman can be heard screaming while the officers detain her.

The boy then escaped and was not physically injured during the incident.