Sewell's attorneys have argued in court papers that the prosecution was politically motivated.
Sewell, a former Baltimore homicide detective who was named Pocomoke's first black police chief in 2011, had filed workplace race discrimination complaints and then was fired without explanation in the summer of 2015. He then filed a federal lawsuit against Pocomoke and Worcester County officials.
The criminal charges against him were filed by the state prosecutor's office less than six months after the lawsuit, on allegations that dated to November 2014.
The state prosecutor's office have declined to comment on the accusations.
The Baltimore State's Attorney's Office did not respond to request for comment.
The Associated Press and Justin Fenton contributed to this report.