Cedric Cromwell, former tribal council chairman, has been charged with filing false tax returns on top of pending bribery and extortion charges. Cedric Cromwell no longer holds any official or unofficial position with the Mashpee Wampanoag Tribe.

A federal grand jury in Boston returned a superseding indictment Monday with the new charges last month.

Cromwell was charged with four counts of filing a false tax return, bringing the total number of charges he faces to 12. He is scheduled to be arraigned on the new charges on April 1 before Magistrate Judge Marianne B. Bowler in federal court in Boston.

The superseding indictment alleges that between 2014 and 2017 Cromwell failed to report a total of $177,392 on his tax returns. That includes $39,000 of personal income in 2014; $57,374 in 2015; $26,884 in 2016; and $54,134 in 2017.

Cromwell was charged with bribery and extortion in November along with David DeQuattro, 54, the owner of a Rhode Island architecture firm.