The arrest was part of a two-month investigation by Aiken County authorities. After serving a search warrant, authorities found marijuana and charged Barton, 28, of Warrenville, S.C., with simple possession of marijuana, authorities say. Two other people were also charged.
In 2000, Rivera told Barton he was a photographer and could make her a model, but after she let him into her home he raped her and stabbed her in the throat several times.
Rivera had raped and killed four other women before attacking Barton.