At about 8.30pm on Friday, September 13, a man unloaded the extinguisher inside the Robin Hood Hotel, Waverley.
He was briefly apprehended by former NRL star Braith Anasta, who 9News understands was attending a function there.
The man then fled the scene before police arrived.
The hotel was evacuated but no injuries were reported.
On Wednesday, police arrested a 22-year-old man and charged him over the incident.
He faced court yesterday.
