Detectives are investigating an alleged armed robbery that occurred on the Blue Water Trail near River Street and the Bluewater Lagoon.
The incident happened around 6pm on Thursday, July 13.
A 40-year-old man was walking in the area when he was approached by two people whose faces were concealed, one of them was holding a knife.
The walker handed over a backpack containing a laptop, tablet, watch and iPhone, following a demand to do so.
The two people have then quickly ran away from the area with the backpack.
Nobody was injured.
Anyone who may have information linked to this matter is encouraged to contact Mackay Police as soon as possible.