UPDATE 1.30pm: Rockhampton Police will send an item found during the search of Mt Archer to Brisbane for forensic testing.

Detective Senior Sergeant Scott Moon would not go into detail about what was found, simply describing it as a "generic item".

He said many people walked Mt Archer and police were not sure if it was even related to the disappearance of Robert Martinez and Chantal Barnett.

Det Snr Sgt Moon said when the item is sent to Brisbane he did not expect to receive the results of the tests for several weeks.

UPDATE 10.25am: A VERTICAL rescue team are scaling down Mt Archer and searching ravines to find clues in the disappearance of Robert Martinez and Chantal Barnett.

A police officer is co-ordinating 20 SES members as they comb the area.

Detective Senior Sergeant Scott Moon said he could not reveal exactly who gave the tip-off came or what it was, but he said police were taking it very seriously.

"I don't know what we'll find," he said.

"All I can really say is we're looking for any evidence pertaining to the disappearance of Robert and Chantal."

Det Snr Sgt Moon said the families of the missing people had been informed that police were searching the area.

He said police had already searched about five addresses and numerous cars as part of the investigation.

9.40am: A SEARCH is underway in the Mt Archer area for missing Rockhampton duo Robert Martinez and Chantal Barnett.

Police and members of the State Emergency Service have today commenced a search of an area around Mt Archer, Rockhampton as part of their investigation into the disappearance of duo.

"As a result of information received from the public, we are conducting the search in this specific location," Rockhampton Criminal Investigation Branch Detective Senior Sergeant Scott Moon said.

Robert Martinez, 26 and Chantal Barnett, 27 were last seen in the Rockhampton/Yeppoon areas in late February or early March. Concerns were raised after the pair failed to make contact with family or friends.

Rockhampton CIB and members of the Homicide Investigation Group continue to investigate the couple's disappearance and have stepped up their appeal for anyone with information to contact police.

"Anyone who may have seen the pair or their vehicle is asked to contact us or Crime Stoppers. Regardless of how trivial you think the information might be, please come forward and let us know," Detective Senior Sergeant Moon said.

The car is described as a white Holden VT Commodore sedan, which may have been in the Mt Archer area between February 28 and March 2.

Robert's friend Joe Lewis created a video and posted it on YouTube as an impassioned plea to the public to come forward with any information regarding Robert's whereabouts.

Rockhampton man Robert Martinez.
Rockhampton man Robert Martinez. Contributed

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