- Body found in Majura believed to be missing Evatt man Andrew Carville
- Fears for driver after crashed ute found in Molonglo Gorge
- Andrew Carville's family label disappearance as 'out of character'
- Police question owner of dumped vehicle in Andrew Carville murder investigation
Police say a woman who was a former housemate of murdered Evatt man Andrew Carville and the male owner of a ute found dumped at Molonglo Gorge are suspects in his killing.
Homicide detectives are yet to make any arrests almost two months after Mr Carville's body was discovered on defence land at Majura during a police line search on November 19.
Their investigation zeroed in on the recovered ute and a group of people who last saw Mr Carville alive including the former housemate who moved out of his house on the night of November 4.
Detective Sergeant Donna Parsons said detectives were now focused on the male vehicle owner's movements between 10.45pm and 11.15pm the night Mr Carville disappeared.
Police have called for witnesses travelling on Kuringa Drive in Fraser who might have seen a 2015 orange coloured Holden Colorado utility and the 1986 cream coloured Toyota LandCruiser parked on the road.
"Information received indicates that there was a vehicle travelling along Kuringa Drive during this timeframe that needed to swerve around these two vehicles to avoid a collision.
"We are appealing for the driver of that vehicle as well as any other person who may have seen these two vehicles ... to contact Crime Stoppers."
Police have previously questioned the owner of the LandCruiser over the killing but he was not charged.
The vehicle was found dumped in bush at the gorge days before Mr Carville's body was discovered.
"We've spoken to both those people, the owner of the LandCruiser and the housemate, and we are following up with all their movements to try and determine their involvement in this murder.
"They've been interviewed but they've obviously not given any indication as to their complete involvement at this stage."
She said the owner of the orange coloured Holden Colorado that was seen stopped behind the LandCruiser on Kuringa Drive was linked to the housemate but was not a suspect.
Detective Sergeant Donna Parsons said the driver of the car who was forced to swerve around the two vehicles was travelling on the stretch of road between Edlington Street and Kingsford Smith Drive.
"We believe that people may have got from one vehicle into the other vehicle but at this stage we're just trying to work out what exactly was happening up there on Kuringa Drive."
Police have so far refused to reveal how Mr Carville died, saying only his cause of death was a key element of the investigation.
The homicide squad has remained tight-lipped about the ongoing investigation into Mr Carville's death but quickly deemed it suspicious.
Early on in the investigation, it ruled out family members as persons of interest in the killing and said on Wednesday that was still the case.
Police previously said residents and several people who helped with the move had been identified as persons of interest and officers had seized numerous items for forensic tests.
Detective Sergeant Parsons said a team of detectives was working around the clock to sift through information and 40 calls linked to the incident had been made to Crime Stoppers.
She said police would continue to pursue an investigative strategy they had put in place to help track down the killer.
Any information to Crime Stoppers, 1800 333 000 or act.crimestoppers.com.au.