Police say they expect to continue searching bushland today on the outskirts of Rockhampton in central Queensland, as part of investigations into the disappearance of a man and a woman.

Robert Martinez, 26, and Chantal Barnett, 27, have not been seen for about three months.

Police say they started a search of the Mount Archer area yesterday after receiving information from the public.

The operation included personnel abseiling down ravines in the search for clues.

Police say they found an "item of interest" yesterday, which has been sent away for forensic testing.

They want to hear from anyone who saw a white Commodore in the Mount Archer area between late February and early March.

That car was later found abandoned and damaged at Gavial Creek.