A police spokeswoman said emergency services were called about 11am, to a vehicle lying nose-first in the Leith beside Leith Valley Rd, near Poulters Rd.
``It appears that the vehicle has been dumped into the stream. It wasn't a case of a vehicle crashing off the road.''
An officer who attended found what appeared to have been a small fire on the inside of the vehicle and a strong smell of petrol. However, it was not known if it was intentionally lit.
The vehicle was towed out of the stream about 12.20pm yesterday, and is now in the possession of police.
``Police don't believe anyone was injured during the incident, and inquiries are ongoing to ascertain just how it got there. If anyone saw the occupants of the car, they should contact Dunedin police.''
Dunedin police (03) 471-4800, Crimestoppers 0800 555-111.