Queensland police have confirmed that a preliminary examination of items located at a refuse site are not related to ongoing investigations into a missing 78-year-old woman.

Several “items of interest” were found on Thursday afternoon at the landfill site, which was being combed for the remains of retired teacher Lesley Trotter.

Three days into the search, Queensland Police said several items were discovered at the Swanbank waste management facility in Ipswich.

Ms Trotter vanished from the inner Brisbane suburb of Toowong on March 28.

Her mobile phone and wallet were found in her unit and her car was still in the garage.

Investigators believe Ms Trotter was killed the night she went missing and her remains were hidden in a wheelie bin, which was compacted by rubbish collectors and freighted to two massive landfill sites.

The search began on Tuesday at the Swanbank facility on the outskirts of Ipswich after days of preparations to narrow down the search area.

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Police said no further updates would be available at this stage.

© AAP 2023

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