Three police officers were charged on Tuesday for their roles in the alleged assault of a 24-year-old body piercer on a busy Brooklyn subway platform in October. One officer, Richard Kern, who is accused of sodomizing the man with his baton, faces the most serious charge, aggravated sexual abuse in the first degree.

The two other officers, Alex Cruz and Andrew Morales, were charged with hindering prosecution and official misconduct.

Brooklyn District Attorney Charles J. Hynes announced the indictments at news conference several hours after the three officers surrendered, detailing the accusations and disclosing the charges by the grand jury that painted a chilling picture of police brutality and subsequent cover-up. The officers were arraigned later in the day.

Prosecutors had asked that Officer Kern’s bail be set at $50,000, but the judge put it at $15,000. Officers Morales and Cruz were released on their own recognizance.