A fourth man has been charged in relation to the murder of 23-year-old Levi Johnson at Mansfield last Monday.
Operation Uniform Challenger was established after four men allegedly attacked Mr Johnson in a car park on Pine Mountain Road. He died from his injuries at the scene.
On Saturday night, police surrounded accommodation on Albion Street at Warwick.
A 24-year-old Birkdale man and 24-year-old Wynnum West woman were taken into custody without incident.
The 24-year-old man has been charged with one count of murder (serious organised crime).
He is expected to appear before Ipswich Magistrates Court today.
The 24-year-old woman is assisting police with enquiries.
Investigations remain ongoing.