A UN worker-turned-journalist has been indicted for robbing a string of banks on his lunch break, prosecutors announced Friday in Manhattan court.

Abullahi Shuaibu, 53, did not appear for the brief proceeding, and the exact charges were not revealed.

He allegedly targeted four banks beginning Feb. 27. The Nigerian national’s first mark was Santander Bank on Madison Avenue, where he slipped the teller a note that stated, “Give me $5,000 now. I have a gun. I will use it if you don not give me, I am very serious!”

The robber politely added, “Thanks for your understanding.”

On March 27, he handed over a note with the same message to a teller at a Santander Bank on Third Avenue and made off with another $5,000, the complaint states.

Shuaibu, who worked as a State Department-credentialed reporter for the PanAfrican News Agency, unsuccessfully tried to rip off two other banks, authorities said.

Cops arrested Shuaibu outside the US Mission to the United Nations, where he’s been working out of the building’s Foreign Press Center.

A security guard alerted authorities after recognizing Shuaibu in surveillance photos circulated by the NYPD, officials said.

The suspect is being held on $150,000 bond.