Tanzanian authorities have arrested six people, including four from Saudi Arabia, in connection with an attack that killed two people and injured 30 others during a mass at a church, officials say.
Jakaya Kikwete, the Tanzanian president, called Sunday's blast, which happened in the northern town of Arusha, an "act of terrorism".
"This is an act of terrorism perpetrated by a cruel person or group who are enemies of the country," Kikwete said in a statement on Monday.
The attack on the church is one of the first such incidents to hit Tanzania.....