Mayor-elect Zohran Mamdani has decided to appoint de Blasio administration alum Dean Fuleihan as his top City Hall aide, according to sources familiar with the matter.

Mamdani was expected to formally announce the appointment of Fuleihan as his first deputy mayor pick at a press conference in Manhattan on Monday morning, the sources told the Daily News.

Fuleihan served in the same position under Mayor Bill de Blasio between 2018 and 2021.

His appointment marks the first senior-level hire Mamdani has announced since he won the Nov. 4 mayoral election.

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