A former doctor pleaded guilty in federal court Thursday to drug trafficking charges for operating what authorities called the nation's largest illegal methadone laboratory.

William Dolph, 42, Clarendon Hills, pleaded guilty to two counts of possession with intent to distribute narcotics and faces maximum penalties of 40 years inprison and $2 million in fines.Dolph has agreed to forfeit two yachts worth a total $1.05 million, his condominium and a 1984 BMW automobile, Assistant U.S. Attorney Jeff Stone said.

After the incident was announced in June, Dolph and his wife, Laura, fled to Canada on their $750,000 yacht, the Lorelei II. They were apprehended by the Royal Canadian Mounted Police.