The three officers are all facing disciplinary action after the two youths were picked up from South Hedland in June, taken to the town’s outskirts and left there.
The teenagers were dropped between South Hedland and an area called Two Mile Camp.
The incident led to an Internal Affairs investigation within WA Police, and criminal charges have now been laid against one of the officers as a result.
The officer has been charged with two counts of assault and one count of reckless driving, with a court date yet to be set.
Loss of confidence proceedings which can lead to dismissal have also been commenced against the trio.
The three officers remain stood aside from operational duties.
Another officer from South Hedland Police Station was charged with assault last month over unrelated allegations.
The senior constable allegedly assaulted two people after police stopped their vehicle in January.
WA Police have also launched an internal investigation into claims two Aboriginal teenagers were threatened with guns after the vehicle they were travelling in was pulled over in South Hedland in April. Police have denied there is a cultural problem at the South Hedland station.