A police officer who has reasonable ground to believe that a person has possession of a firearm and is threatening to use it in circumstances where death or injury to themselves or another person is likely, whether or not another person is actually present, without warrant and using any force reasonably necessary and with the assistance of any other person, may –

(a) enter the premises where that person is; and

(b) search the premises where the person was found and any person on those premises; and

(c) seize any firearm, firearm part or ammunition found on the premises or any person on those premises.