A Stuart doctor being sued over a boating accident in which a diver’s legs were severed has filed a libel lawsuit against a witness and a website based in Palm Beach County.

Emergency room physician Roger Nicosia, represented by Robert Elder III of Crary-Buchanan in Stuart, alleges in a Jan. 10 complaint assigned to Martin Circuit Judge Sherwood Bauer Jr. that Lisa Rollins of Charlotte County and three others are conducting a "full-blown pursuit to destroy (his) reputation, livelihood and good name."