Detectives investigating the murder of 53-year-old David Collin have launched a public appeal to determine the circumstances prior to the discovery of his body in Maroochydore on September 9.
Preliminary information suggests the homeless man was subject to a violent, unprovoked attack as he slept in his sleeping bag at the rear of a community centre on Millwell Road East.
Mr Collin was located with severe head injuries by a member of the public who immediately notified police around 8.30am.
Detective Senior Sergeant Daren Edwards from the Sunshine Coast Criminal Investigation Branch said the victim was seen using a carry bag with wheels to transport his possessions so he may have stood out to people passing by.
"Between 6:00pm on Sunday evening to daylight on Monday morning, six people can be seen walking in the vicinity of where Mr Collin slept that night," Detective Senior Sergeant Edwards said.
"There are a couple of people on pushbikes and a few walking who we would like to identify and have come forward," he said.
"Additionally, we would appeal to anyone who may have seen anything suspicious around the Millwell Road Community Centre on Sunday night or early on Monday morning to contact police.
"This appears to have been a very cowardly attack on a vulnerable person and we will continue to pursue all lines of inquiries to find whoever is responsible."
If you have information for police, contact Policelink on 131 444 or provide information using the online form 24hrs per day.
You can report information about crime anonymously to Crime Stoppers, a registered charity and community volunteer organisation, by calling 1800 333 000 or via crimestoppersqld.com.au 24hrs per day.
Quote this reference number: QP1901767394