Muhammad also reportedly faced 15 counts of engaging in a terrorist act.
The former leader, who left office in December 2001, now faces more than 100 counts of theft.
Mr. Davis will face nine counts of attempted murder in that trial.
Lewis had faced two counts of murder before prosecutors dropped those charges.
He faces two counts, first-degree murder and trying to cover up a crime.
He had faced 23 counts in the arson case.
His son, who is 36 years old, faces 12 similar counts.
Ciavarella is facing 38 other counts in federal court.
At his trial, he faced five counts of criminal offenses.
His wife, Mildred, faces two counts of that charge.