Grandmother murdered on Australian island

The granddaughter of an 85-year-old woman murdered on a small island has pleaded for an end to the mystery.

Liselotte Watson, a widow, was found by police face down in her bedroom on Tuesday afternoon and had met a violent and unnatural death.

She had lived on Macleay Island, off Brisbane, for 10 years and was the first person to be murdered there.

Ms Watson's granddaughter Emma lives on a nearby island and made the trip to the crime scene on Sunday.

Emma's mother couldn't bear to make the trip. Emma said she and her mother were coping as best as they could but wanted a resolution.

Emma said her grandmother was well known on the island and the locals would pop in for a coffee or to bring her the newspaper.

"She was a beautiful lady, very warm-hearted, kind-spirited, strong, determined and brave," Emma reminisced, breaking down.

"I probably didn't see her as much as I should."

Emma said Ms Watson, a Broncos fan, was also very stubborn to do things herself and took immense pride in her garden, her pet finches and her family.

She said Ms Watson had served as a nurse in Germany in World War II and had also lived in New Zealand.

"She is very very strong-willed and had her own ways," Emma said.

"She was happy."

Police on Saturday scoured through a truckload of rubbish for more than eight hours but didn't unearth a clue as to who killed Ms Watson.

Detective Superintendent Geoff Sheldon said that although some suspicious items were found, like household linen and clothing, nothing "lighted up a light".

Since Ms Watson's death, the 1200-strong community has overwhelmed police with information, including concerns about break-and-enters and drug use.

"We've had a hell of a lot of information from the public, to put it bluntly," Det Supt Sheldon said.

Police also searched one resident's home, armed with a search warrant on Friday night.

Officers said the man was not a suspect.

-AAP

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