Angel Santiago, 43, of Ambrose, has been indicted for engaging in a sexual act with an inmate who was then under his custodial authority when he was a federal correctional officer.
The government says the offense took place between 2010 and 2012, at the Federal Correctional Institution in Tallahassee.
Santiago was arraigned in federal court, and a trial date was scheduled for May 6.
If convicted, Santiago faces a maximum sentence of 15 years in federal prison. The case is merely an allegation by a grand jury that a defendant has committed a violation of federal criminal law and is not evidence of guilt.
All defendants are presumed innocent and entitled to a fair trial, during which it will be the government's burden to prove guilt beyond a reasonable doubt.