An NYPD officer was busted Tuesday for trafficking heroin after returning from Massachusetts with $50,000 stashed in her car, authorities said.

Officer Yessenia Jimenez allegedly conspired with another person to distribute 100 grams or more of heroin, according to a new Manhattan federal court complaint.

After a months-long investigation and surveillance, an agent for the Drug Enforcement Agency confronted Jimenez and cohort Luis Soto, prosecutors said at the cop’s appearance in court Tuesday.

The agent shined a flashlight into the woman’s car and discovered a bundle of cash along with her NYPD service weapon in her purse, according to the court papers. The bundle allegedly turned out to be $25,000.

The agent then found another in a plastic grocery bag in her trunk, according to court documents. It contained another $25,000, officials said.

Jimenez and Soto were arrested, and authorities later found 250 grams of what appeared to be heroin in the woman’s apartment, according to the complaint.

Manhattan Assistant US attorney Thane Rehn argued that Jimenez should be held without bail, adding, “The defendant’s own apartment was being used as a stash house.”

Jimenez was released Tuesday night on $75,000 bond.