Police have commenced a search for motorists reported overdue late last night after travelling in the Camooweal area.
On March 11 a white Holden Colorado with seven people left Mount Isa intending to travel along the Old May Downs Road through Camooweal to Lake Nash in the Northern Territory.
The group consists of five adults aged 27 to 33, including a pregnant woman, and two children, under the age of six.
The alarm was raised when the vehicle failed to arrive at Lake Nash.
Two vehicles left Lake Nash today, each containing three to five people, searching for the missing vehicle but they have also not returned.
It is believed they may have all become stranded around 100km South of Camooweal due to heavy rain in the area.
A search involving helicopters and fixed wing aircraft commenced today with the area inaccessible by road.
If you have information for police, contact Policelink on 131 444 or provide information using the online form 24hrs per day.
You can report information about crime anonymously to Crime Stoppers, a registered charity and community volunteer organisation, by calling 1800 333 000 or via crimestoppersqld.com.au 24hrs per day.