Abarokotse ubwicanyi bumaze imyaka 20 buhitanye abantu 166 mu Gatumba mu Burundi basaba ubutabera mpuzamahanga gukurikirana abakekwaho icyo cyaha. Ubutegetsi bwa Tanzaniya bwarekuye abayobozi b’ishyaka rya Chadema ritavuga rumwe n’ubutegetsi.