Queensland police believe more than one person was involved in the death of a 61-year-old woman and hope a $500,000 reward will help uncover their identities.
The body of Krishna Chopra was found at her home at Crows Nest in the Darling Downs, north of Toowoomba on January 31.
Police believe she was killed around January 20, at least 10 days before her remains were discovered.
In March, Simon Jones was charged with murdering Ms Chopra, who was his mother-in-law, but police are not convinced he acted alone.
The reward could help gather information about people potentially involved in planning the alleged murder, Detective Senior Sergeant Paul McCusker said on Wednesday.
"I urge anyone who has not already come forward, who may have had an association with Ms Chopra or visited her house at 5 Park Road, Crows Nest to come forward," he said.
The $500,000 reward is for information leading to the conviction of those found to be responsible for Ms Chopra's alleged murder.
Indemnity from prosecution will be recommended for any accomplice who didn't actually commit the crime.
