Detectives have released an image of a vehicle they believe could assist with investigations into the death on a man on January 5.
Police will allege the victim, 52-year-old man, was assaulted near Rudyard Street, Inala, around 6.30pm on January 5.
Several hours later, police were called to Logan Hospital around 12.30am on January 6, after the man presented with significant head injuries.
The man was transported to a specialist care facility, however passed away from his injuries on January 7.
Investigators from the Logan District Criminal Investigation Branch are seeking anyone that may have observed a dark-coloured Audi (pictured) in the Wacol area on Sunday, January 5.
The vehicle has distinguishable paint fade on its roof.
Any information regarding the vehicle, including dashcam or CCTV footage, is asked to contact police.
A 32-year-old Griffin man was arrested on January 16 and charged with one count each of murder, armed robbery, grievous bodily harm and two counts each of kidnapping and torture.
A 31-year-old Birkdale man was charged on January 10 with one count each of murder, grievous bodily harm, armed robbery and two counts each of torture and kidnapping.
It will be further alleged the men were all known to each other.
Investigations are continuing.

EARLIER: Update 4: Homicide, Logan – Queensland Police News
If you have information for police, contact Policelink by providing information using the online suspicious activity form 24hrs per day at www.police.qld.gov.au/reporting or call 131 444.
Report crime information anonymously via Crime Stoppers. Call 1800 333 000 or report online at www.crimestoppersqld.com.au.