A Queens police officer was promoted to the rank of sergeant Friday, becoming the fourth in his blue-blooded family to achieve the honor.

Mustafa H. Young’s mom, dad and sister — all members of the force — watched on with other family as he and 75 other officers were celebrated during a ceremony at 1 Police Plaza.

“I want to say I’m excited, but I’ve been waiting for a while. Obviously, being a part of a legacy, just trying to keep it all in the family,” Young told The Post. 4

“I am excited, though, for the next step in my career. I’m following in some good footsteps and am the last of a long line.”

In his new role, Young will join his sergeant father at Patrol Borough Queens South, where the younger Young will serve with the NYPD’s Youth Services Division, part of Community Affa

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