New SA laws give cops more protection

Police protection laws similar to those implemented in New South Wales following the deadly Lindt Cafe siege could soon be legislated in South Australia.

A bill set to be introduced to parliament next week protects officers from prosecution when they use lethal force when dealing with terrorist attacks.

Attorney-General Vickie Chapman said the changes provide certainty to police and protection to the public.

"Police who are involved in the co-ordinated response to these incidents have a clear understanding that they have the capacity to act pre-emptively and ensure that they'll be protected against any criminal liability," she told reporters.

"It is critical that the law doesn't inhibit police using lethal force to protect the public in a terrorist incident."

Police will be protected from prosecution unless their actions were in contravention of an order or they did not act in good faith.

The bill also protects the identity of officers to minimise the risk of repercussions.

Ms Chapman said it will be up to the police commissioner to issue a declaration whether or not an incident is terror-related.

"The commissioner's declaration can be issued verbally in urgent circumstances and confirmed in writing as soon as is reasonably practical," she said.