Police have a "number of people of interest" as they continue to investigate a fatal house fire in Elderslie earlier this month.
Detectives continue to study various inquiry avenues nearly two weeks after a man's body was found following a blaze at the Crank Place home.
DNA and blood tests have confirmed that Hayden Forrest, 21, died in the fire. Police understand several people were home when the fatal blaze occurred about 11.40pm on June 1.
No arrests have been made at this stage.
Camden Police Area Command crime manager Shane Woolbank told the Advertiser that police had several reliable inquiry avenues.
"This was an extremely serious and violent crime that resulted in the death of one person," Detective Chief Inspector Woolbank said.
"[But] it could have resulted in the death of up to six people."
Detective Chief Inspector Woolbank said police were investigating possible links with an outlaw motorcycle gang.
"But that [link] has not been confirmed," he said.
Strike Force Cavaughe was established soon after the June 1 incident.
The strike force consists of Camden detectives and NSW homicide and arson squad members.
Detective Chief Inspector Woolbank again appealed for any witnesses to come forward.
He said people could speak confidentially with detectives by calling the Narellan Police Station on 4632 4499.