A New Jersey woman has pleaded not guilty to reckless manslaughter in the case of a man who died after having his penis injected with silicone.

The woman police say gave the injection, Kasia Rivera, appeared Tuesday in a Newark courtroom.

The Essex County prosecutor’s office says 35-year-old Rivera gave 22-year-old Justin Street, who was seeking an enlargement, the injection in May.

Street died the next day. His death was ruled a homicide following an investigation and a medical examiner’s determination he died of a silicone embolism.

Prosecutors say Rivera had no training to perform the procedure. They believe Rivera may have conducted similar unauthorized procedures out of her East Orange apartment, but no one else has stepped forward.

She remains free on $75,000 bail.