A GoFundMe page has been set up to help cover the costs of Larissa Beilby's funeral as Zlatko Sikorsky waits for his court appearance on Monday after being charged with murder.

Police confirmed the pair were in a relationship and that the investigation was far from done, with detectives still searching for the silver 2014 Holden Commodore, with Queensland registration 966 WKB, that Mr Sikorsky was believed to have travelled in before being found on the Sunshine Coast.

The Holden Commodore detectives are still searching for as part of the investigation into Ms Beilby's death. Credit:Queensland Police Service

It took more than 100 police officers and detectives just over 72 hours to take Mr Sikorsky into custody, following the discovery of Ms Beilby's body in a barrel in the tray of a black ute abandoned at a mobile home park in the Gold Coast suburb of Stapylton on Wednesday afternoon.

Mr Sikorsky, 34, was charged with murder and misconduct with a corpse over the death of Ms Beilby, 16, after he emerged from an Alexandra Headland unit and surrendered to police on Saturday night, ending a 27-hour siege. He was due to appear in Maroochydore Magistrates Court on Monday.