It's too early to say if the murder of a young Queensland woman, who was savagely assaulted on a Mackay street, was a random attack.
Police say the 23-year-old woman was attacked early on Saturday morning as she walked home from work along Boddington Street, in the central Queensland city.
She was found on the street with multiple injuries about 12.25am (AEST) and died later in hospital.
Police have described the attack as disturbing and many specialist officers have joined the investigation.
"This is a matter that we are working around the clock to solve," Detective Acting Inspector Paul Elliot told ABC news on Monday.
He said officers from the homicide investigation group had joined the investigation, along with detectives from in and outside Mackay.
Police want to hear from anyone who was in the area late on Friday night or very early Saturday morning.
Mr Elliot said he would not be releasing details about the woman's injuries, and a post-mortem examination on Tuesday would determine the cause of death.
He said police were following several leads, and there had been calls to Crime Stoppers and to police directly.
"There was a very callous attack on a very young, defenceless female," he told ABC radio.