A man remains on the run after stabbing a woman and assaulting another man on a Melbourne street.

A man has been found dead at an Adelaide business.His body was discovered inside the business on Malcolm Street in West Croydon shortly before midday on Sunday, police said.

Two people have been injured after a pair of "heavily disguised" men armed with a meat cleaver and an iron bar raided their home in Newcastle.

South Australian police say they will trial various stab-proof and ballistic vests ahead of a planned rollout to the rest of the force.

A woman has been charged over the death of a 51-year-old man in Sydney.

Two West Australian police officers have allegedly been assaulted by a man and woman during a random breath test.

A driver has been pepper-sprayed and arrested after allegedly attacking a police officer with a stick in Melbourne.

A convenience store attendant has fought off three masked armed robbers in Melbourne, using a small pole to chase the trio out of his shop.

A P-plater driver has injured six people, including two children, after a high-speed police chase on a NSW coastal highway.

A 44-year-old man is fighting for life in hospital after allegedly being struck in the head with bicycle handle-bars after arguing with another man at a Riverina home.