In 1994, UNITA signed a new peace accord. Savimbi declined the vice-presidency that was offered to him and again renewed fighting in 1998. Savimbi also reportedly purged some of those within UNITA whom he may have seen as threats to his leadership or as questioning his strategic course. Savimbi's foreign secretary Tito Chingunji and his family were murdered in 1991 after Savimbi suspected that Chingunji had been in secret, unapproved negotiations with the Angolan government during Chingunji's various diplomatic assignments in Europe and the United States. Savimbi denied his involvement in the Chingunji killing and blamed it on UNITA dissidents.