Another inmate from the Horizon Juvenile Center, which is operated by the city’s Administration for Children’s Services, has come forward in a new federal lawsuit to allege that he was sexually assaulted during his time at the facility.

The detention center is the same facility that settled earlier this year with a man who says that, when he was locked up at the facility when he was 15 years old, guards at the facility turned him and other inmates into sex slaves.

This time it’s another inmate, Alsanne Keita, who says he was 15 years old when he was kept at the facility that during his time there in 2012, Nathalie Medford, an employee known as ”Ms. C” who called the inmates her “sons,” repeatedly raped Keita during his detention — and threatened to plant drugs and guns in his cell if he dared to talk.

Keita alleges that Medford took things as far as visiting his parents’ house during the detention and telling them that Keita was “like a son” to her.

But Keita says his experience there wasn’t unique — he alleges that several other guards put the underage inmates through a “grooming” process to satisfy their sexual desires, plying the youths with video games, fast food, booze and drugs to get them to submit.

Medford is no longer with ACS, which did not immediately respond to a request for comment.

Vik Pawar, who represents Keita and who has represented other Horizon inmates who say they were sexually abused by staffers, said the “damages to these juveniles is irreparable.”

“But I am happy that more individuals are gaining the courage to come forward and seek accountability,” he said.