On Tuesday 30 September 2025 police were called to 55 O'Sullivan Beach Road, Lonsdale where Christopher (Chris) Robertson was located deceased by an associate.
The death of Chris was declared a major crime and is being investigated by the Major Crime Investigation Branch.
On 11 December 2025 a 30-year-old man from Happy Valley was arrested and charged with Chris' murder. He will next appear in the Adelaide Magistrates' Court on 7 July 2026.
This investigation remains ongoing and this morning officers from the Major Crime Investigation Branch have arrested four people for offences connected to this murder investigation.
A 33-year-old woman from Happy Valley has been charged with two counts of assisting an offender and one count of carrying out threats or reprisals relating to persons involved in criminal investigations.
A 61-year-old man from Happy Valley has been charged with two counts of assisting an offender.
A 29-year-old man from Christies Beach has been charged with one count of carrying out threats or reprisals relating to persons involved in criminal investigations.
A 27-year-old man from Christies Beach has been charged with one count of carrying out threats or reprisals relating to persons involved in criminal investigations.
All four people arrested this morning have been refused police bail and are expected to appear in the Adelaide Magistrates' Court later today.
Major Crime Investigation Branch officer-in-charge Detective Superintendent Darren Fielke said the arrests send a clear message that police take any interference with a murder investigation seriously.
"We will not hesitate to investigate offending of this nature and will vigorously pursue prosecutions against any person found to be assisting those responsible, interfering with investigations or threatening witnesses,'' he said.
Police again encourage any person that has any information about Chris' murder or those who were responsible to contact Crime Stoppers on 1800 333 000.
