Findon stabbing: Great grandfather is charged with murdering his wife after partner was found dead inside the couple’s Adelaide home

An elderly great-grandfather has been charged with murder after allegedly stabbing his wife to death.

Frank Dimasi, 91, was hit with the charges on Monday following the death of his 85-year-old wife Maria in Findon, in Adelaide's west, late on Saturday evening.

Police were called to the house at around 11.20pm following 'reports of an incident' and found Maria's body with multiple stab wounds.

Dimasi, who uses a walker and is believed to have a neurological disability, was arrested at home and taken to Queen Elizabeth Hospital under police guard for treatment of non-life-threatening and self-inflicted injuries.

Frank Dimasi was hit with charges on Monday following the death of his 85-year-old wife Maria (pictured) in Findon, Adelaide's west, late Saturday evening

Dimasi was described by shocked neighbors as a 'vulnerable' man suffering from what appeared to be early dementia and who was often seen walking from their house to the corner shop and back again.

Forensic officers searched the house for evidence on Sunday before a deep-cleaned van was called to the property.

Ms Dimasi, better known in Adelaide's Italian community as 'Nonna Maria', was a much-loved cook who always prepared meals for the vulnerable.

She volunteered in her grandson's kitchen, Nonna's Cucina, a community meal service that provides food to people recovering from illness or medical treatment, the elderly and people with disabilities.

Mrs. Dimasi is seen alongside celebrity chef Maggie Beer and her grandson Stefan Dimasi

Ms. Dimasi was also considered the community's “matriarch,” known for sharing her Italian recipes and attending birthday parties for local children.

Neighbors said she was in 'good health' and was often seen walking around her street with her mobility scooter.

Mrs. Dimasi was also known to be incredibly proud of her family and always doted on her three children, grandchildren and great-grandchildren.

South Australian Prime Minister Peter Malinauskas paid tribute to Ms Dimasi and praised her volunteer work at Nonna's Cucina.

“On a personal level, Maria Dimasi has made a very important contribution to our state, especially in the Italian community in the western suburbs,” Mr Malinauskas told reporters.

“Nonna's Cucina, which will be well known to many South Australians, has done a fantastic job delivering meals to vulnerable people, especially the elderly.

“This is a good person who lost his life under tragic circumstances.”

Mrs Dimasi volunteered in her grandson's kitchen (pictured together) Nonna's Cucina – a community meal service that provides food to people recovering from illness or medical treatment, the elderly and people with disabilities