A former U.S. Attorney, state judge and state Republican chairman has agreed to plead guilty to charges related to a tax fraud conspiracy, federal prosecutors in Raleigh, N.C., said Wednesday.

Samuel T. Currin will plead guilty to conspiring to launder $1.45 million through his law firm’s client trust account and to lying on his taxes by failing to report an offshore debit card account, prosecutors said. Three others also have been charged.