The Gran Grif gang killed up to seventy people and displaced six thousand residents during a violent assault in the Artibonite region of Haiti.Local human rights groups reported significantly higher casualties than the official police count of sixteen deaths following the burning of houses.The United Nations condemned the massacre while the US offered rewards for information on gang financial networks as violence spreads beyond the capital.Kenyan police are expected to join a multinational security force soon to help local authorities combat the growing influence of armed criminal groups.