A police sergeant in Florida is accused of using law enforcement databases as a personal dating service to target at least 150 women — some of whom he allegedly had sex with while on duty.

An internal investigation into Bradenton police Sgt. Leonel Marines, 36, was launched in June after a citizen’s complaint was filed by an adult female and her parents, alleging that he followed her home after a “chance, brief encounter” in a parking lot earlier that day, Bradenton Police Chief Melanie Bevan told reporters Thursday.

Once at the family’s home, Marines told the woman’s parents that he was there to speak with their daughter regarding a “domestic matter,” but her parents refused his request after they realized there was no need for the interaction with the officer, Bevan said.

The woman’s parents then asked for Marines’ name, as well as the name of his supervisor — requests the sergeant refused before leaving the residence, Bevan said. When a watch commander confronted Marines, the officer tried to explain the creepy behavior.

Marines told the watch commander that he followed the woman to her home because one of her headlights wasn’t working properly and he thought she might be impaired, Bevan said.

“The two stories really didn’t match up,” the chief told reporters. “And when it was brought to my attention, I ordered a further investigation into the incident, which ultimately led to an audit of Marines’ driver license and vehicle registration record use, as well as his patrol activity.”

Investigators then found a “very, very clear trend of Marines focusing on female versus male names” during his policing, Bevan said. The 12-year law enforcement veteran was removed from patrol activities and reassigned to desk duty. He was later placed on administrative leave without pay and stripped of his badge, gun and uniform before ultimately resigning in October, Bevan said.

But a probe of Marines’ alleged activities revealed “several hundred” questionable database queries involving women, some dating back as far as 2012, Bevan said. In all, nearly 150 women have been interviewed by five detectives working the case.

Of those, investigators determined Marines had “negative and inappropriate direct contact” while both on and off duty with a smaller subset of women, the majority of whom were Hispanic, according to Bevan, who did not provide an exact number of alleged victims.

“To get right to the root of the matter, Leonel Marines was not utilizing this data for law enforcement purposes whatsoever,” Bevan told reporters. “Instead, he was using it a variety of ways — from social media, cold telephone calls, visits to their home under the guise of being there for police business, you name it — to try and get dates with these women.”

Bevan said Marines — who could not be reached for comment Monday — was “very persistent and successful” in his efforts to systematically use law enforcement databases as a personal dating service.

“Of course, it goes without saying that this is not what our officers should be doing with their access to information or with their time,” she told reporters.

Marines would have been terminated had he not resigned. He still remains the subject of an open criminal investigation by FBI officials in Tampa — and there could be additional victims who have yet to be identified, Bevan said. Anyone with more information about Marines’ alleged conduct is asked to call (813) 253-1000.

“This is truly a disturbing situation for me as chief,” Bevan said. “Over the past couple of weeks, I have personally met with most of the women involved in the smaller subset in an effort to help them regain their trust in the Bradenton Police Department and to ensure them that Marines’ actions are not a representation of those who so proudly wear this uniform and badge — and also to simply tell them I’m sorry.”

A woman who identified herself as Marines’ wife told The Post that she’s now in the process of divorcing the former police sergeant after learning of the allegations last week. She declined to elaborate.

“I didn’t know anything,” she told The Post through tears.