Three men have been rushed to hospital after being stabbed inside a gym at Brookvale overnight.
Police said that shortly after 8.00pm, an ‘agitated and aggressive’ man entered a gym on Pittwater Road.
He approached four men and a trainer and punched one of the men before producing a knife and stabbing three of the men. The trainer managed to escape injury.
The armed man ran outside the gym and got into a stolen car and drove away.
The three victims were rushed to Royal North Shore Hospital where one was taken straight in for surgery. The other two men remain stable.
A crime scene has been established at the gym and investigations are ongoing.
As he is believed to be armed with a knife police are urging members of the public not to approach him but to call triple zero immediately.