An NYPD school safety agent was busted early Thursday for having an inappropriate relationship with his 12-year-old stepdaughter, cops said.

Damien Neadle was arrested on a warrant at his Queens workplace at 5:20 a.m., police said.

Cops say Neadle’s pre-teen stepdaughter lived with him. His most recent address is in the Bronx, records show.

Neadle, 56, faces a charge of having sexual conduct with a victim less than 13 years old.

It wasn’t clear how long the victim was forced to endure his abuse.