A search is underway in Adelaide's south for a knife that may have been used in the murder of Steven Hinrichsen who died in a "violent and brutal attack" in December.
Mr Henrichsen was found dead in his Morphett Vale home with up to 70 stab, slash and blunt force injuries.
Two men and a woman, who can't be named, have all been charged with murder and are being held in custody ahead of their next appearance in Adelaide Magistrates Court in June.
Wednesday's search, which is expected to continue on Thursday, was centred along the Christie Creek catchment area.
Assisted by State Emergency Service volunteers, police were looking specifically for a 30-40cm wooden-handled knife, a dark jacket or jumper and light-coloured gloves.
Acting Detective Inspector Trevor Rea said a number of items had been recovered, including a glove, and were being assessed to see if they were linked to the case.
"But as you'll appreciate, we'll probably find a number of items along Christie Creek. It is used by a number of people, walking, trail bikes, pushbikes, that sort of thing," he said.
"We'll keep an open mind in relation to what we will find here today."
Charged over Mr Hinrichsen's murder are two men aged 43 and 45 and a 41-year-old woman.
All were known to the victim.
At their first court appearance, a police prosecutor told the court the 63-year-old grandfather had been the victim of a "violent and brutal attack".
He asked the court for a lengthy adjournment to allow time for a detailed post-mortem report to be prepared and for the analysis of text messages and call transcripts.