An aide to state Assemblywoman Carmen Arroyo was arrested Wednesday on charges of robbery and impersonating a police officer, accused of flashing a fake badge and stealing $4,000 from an apartment, police said.

Wilfredo Nazario, 31, was awaiting arraignment and there was no phone number listed at his address. After-hours calls to the assemblywoman’s Bronx and Albany offices were not immediately returned.

Police said Nazario and an accomplice flashed a badge and a weapon to get into an apartment in the Bronx, telling the two residents they were police, breaking into a locked room and stealing the money, which the father of one of the residents had saved to buy a car.

The accomplice was still at large. Police say the apartment was targeted because Nazario somehow heard there was cash there.

The victim picked Nazario out of a lineup that included his mug shot because he had been arrested May 25 after a traffic stop. Police said when he was stopped they noticed he had an NYPD detective-like shield that read “assemblyman” and other police-like equipment in his car.

In March, Arroyo’s grandson Richard Izquierdo-Arroyo pleaded guilty to charges he embezzled $115,000 from a taxpayer-funded nonprofit group, then shared some of the ill-gotten gains with his lawmaking kin, which included City Council member Maria del Carmen Arroyo.

Neither lawmaker has been charged.