Democracy advocacy groups have called for an investigation into whether Romania's interior minister abused his position by overusing motorcades, amid anger at the death of a police officer escorting him.

Two groups made a request to the anti-corruption prosecutors' office Wednesday after Bogdan Gigina died when his motorbike hit a hole Oct 20.

The death has touched a nerve, with critics saying officials overuse motorcades in the crowded Romanian capital.

Media reported that Interior Minister Gabriel Oprea used police-escorted motorcades 1,500 times this year.

Oprea said he needed the motorcade for professional reasons did not say what he was doing. An official told The Associated Press on condition of anonymity because he was not authorized to discuss the case that Oprea had been at a restaurant owned by the ministry.