Detectives investigating Pheobe Bishop's disappearance believe some evidence may have been moved from a key search site before police arrived, as her flatmate is arrested on unrelated charges after a firearm was allegedly found inside her car.
The 17-year-old was last seen on May 15, leaving a rundown home in Gin Gin near Bundaberg where she had been living with couple Tanika Bromley and James Wood.
Queensland Police believe the pair drove Pheobe the 40 minutes to Bundaberg Airport, where she was supposed to board an 8.30am flight to Brisbane and then onto Perth, where she planned to meet up with her boyfriend.
Detectives said they believe Bromley and Wood were the two people who drove her to the airport.
Bromley's 2011 silver Hyundai ix35 hatchback with registration 414-EW3 - believed to be the car Pheobe travelled to Airport Drive in - has been declared a crime scene along with the Gin Gin house.
