The men were involved in an armed robbery at the Too Fast Motors on Sunday night in Port Moresby.
NCD Metropolitan Police Commander Ben Turi says that police managed to recover K14,000, a pistol belonging to the company owner as well as some of the stock items that were taken.
Twelve cartons of smoke, as well as some electronic items were also returned.
Turi says that all the personnel have been suspended without pay pending investigations with no bail granted.
The men will be detained until their case is processed and according to Turi, will all be recommended for dismissal.
Police report that the men were off duty at the time of the incident between 9 and 10pm on Sunday night.
There were using a police car along with police issued weapons all of which have been detained by the investigating officers.