9   Power to enter in emergencies

(1)  A police officer may enter premises if the police officer believes on reasonable grounds that:

(a)  a breach of the peace is being or is likely to be committed and it is necessary to enter the premises immediately to end or prevent the breach of peace, or

(b)  a person has suffered significant physical injury or there is imminent danger of significant physical injury to a person and it is necessary to enter the premises immediately to prevent further significant physical injury or significant physical injury to a person.

(2)  A police officer who enters premises under this section is to remain on the premises only as long as is reasonably necessary in the circumstances.