UPDATE: 2PM Two people charged with the murder of a missing Hilton man have appeared in court as police reveal they are looking for a third person.
Investigators say Samuel Jacob Walker, 26, was at a South Fremantle house when David John Houston was allegedly killed.
Mr Houston was last seen alive on May 11. On Tuesday, police regarded Mr Houston as a missing man. But they later received a tip-off and by early Wednesday morning they had arrested Mr Lee and Ms Kelly.They believe Mr Houston has been killed at Parmelia Street but have not recovered his body.
The 24-year-old had gone to the property between 3pm and 10pm on Saturday, May 12, and it was during that time that he was allegedly killed.
Acting Det-Supt David Bryson would not discuss the alleged motive or how police suspected Mr Houston had been killed. He said Mr Houston's parents were obviously very shocked by the news.
It’s believed Mr Houston knew Mr Walker but it is not clear whether he knew Mr Lee and Ms Kelly.
Det-Supt Bryson said Mr Walker was being urged to contact police.
"Mr Walker was there at the time, obviously he has a story to tell us, we’re very keen to hear what his story is," he said."Please contact police, contact your father and come in and speak to us or if you wish, get yourself a lawyer and come in because we will catch up with you."
Police are searching the property in South Fremantle and have cordoned off a residence in Victoria Park. Police are yet to find Mr Houston's body.
Two people appeared briefly in Perth’s Magistrate Court over the alleged murder.
Jonathan Robert Lee, 23, of East Victoria Park was remanded in custody to appear in Stirling Gardens Magistrate Court on June 27.
His 19-year-old co-accused, Amanda Jane Kelly of Victoria Park, was remanded for a seven day mental health assessment at the Franklin Centre.
The court was told the woman had a history of mental health admissions including anxiety and depressive disorders and borderline personality disorder.
Ms Kelly was also remanded to appear in court again on June 27.
Both the accused were not required to enter pleas.
Ms Kelly was very emotional and crying through most of her appearance, both gestured to supporters in the public gallery.Forensic officers are scouring the Parmelia Street home where they believe Mr Houston was killed. They have also cordoned off a property in Jerard Street in Victoria Park.
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