A woman claims she saw "a dead arm" sticking out of a barrel when a man roared up in a black ute, pointed a shotgun at her and demanded to be let into her housing estate south of Brisbane.
Police discovered a teenage girl's body inside a barrel in the back of a ute at The Lodge estate in Stapylton on Wednesday, sparking a manhunt of the Logan and Gold Coast areas for Zlatko Sikorsky.
The 34-year-old has distinctive tattoos around his neck, while police believe he has access to guns and are warning the public not to approach him.
Police were making inquiries into the disappearance of 16-year-old Sandgate girl Larissa Beilby at a Grassdale Street house in the Logan suburb of Buccan on Wednesday afternoon when Sikorsky fled the property in a black ute.
The car was tracked by police to The Lodge, approximately 20 minutes away, where he dumped the car and then left in a silver 2014 Holden Commodore with Queensland registration 966 WKB.
Sikorsky and Ms Beilby knew each other, police said on Thursday.
But they are yet to confirm the body is Ms Beilby, who was described in a missing person report on Tuesday as not having been in contact with family or friends since June 18.
A resident of The Lodge told AAP a tattooed, Caucasian man pulled up in a ute with the windows shot out and bullet holes through the bonnet, which was flipped up over the windscreen.
"He pulled out a shotgun and said to me and my partner 'I'll give you two grand if you let me in the gate right now'," the woman, who did not want to be named, said.
"We lifted up the gate and let him in.
"He was a big white dude, tattoos everywhere."
As the car passed, she spotted a blue barrel in the tray with "an arm flapping out".
"There was just the one barrel, it wasn't massive either, it was only small. I just seen an arm, a dead arm," she added.
The woman spent Thursday morning at Logan police station making a formal statement.
Other residents have told of seeing the hotted-up black ute coming in and out of the estate over the past fortnight.
Jacqueline and Christopher Anthony said good morning to the driver on Wednesday morning.
"He'd been staring us very intensely and now, knowing what he is and what he's done, it's very nerve-wracking and scary," Ms Anthony told reporters on Thursday.
Detectives say they're still working to identify the victim.