Overview
- Erica Coyne, 69, was found dead and her son Lloyd Mitchell, 50, was found critically injured in their Spencer Park unit on February 8 and Mr Mitchell later died in hospital.
- Detectives have reviewed hours of CCTV, interviewed more than 200 people and seized hundreds of items of evidence while continuing forensic work.
- Police believe the murder weapon may have been discarded and has not been recovered, a factor investigators say has complicated efforts to identify a suspect.
- The WA government announced a $1 million reward on June 23 for information that leads to an arrest and conviction, a level of incentive not used for an unsolved WA homicide since 2016.
- Senior investigators and family members have publicly urged anyone with information to contact WA Police or Crime Stoppers because even small details could break the case and bring closure to the family.