Two people were killed in Sunday's attack during a mass at a Tanzanian church, officials said Monday, as President Jakaya Kikwete called the explosion an "act of terrorism". Six people have been arrested, including four from Saudi Arabia, officials said. "This is an act of terrorism perpetrated by a cruel person or group who are enemies of the country," Kikwete said in a statement, condemning the bombing in the northern Tanzanian town of Arusha in which at least 30 people were also wounded.

The rebel M23 movement has asked Tanzania to scrap plans to contribute troops to the future UN intervention brigade which is designed to fight armed groups in the eastern Democratic Republic of Congo. The M23 rebels, who deny UN expert claims that neighbouring Rwanda and Uganda support them, "have consistently prevailed over much larger and better equipped forces," the movement's political leader Bertrand Bisimwa warned in a letter to Tanzanian President Jakaya Kikwete dated April 11.

Congolese President Denis Sassou Nguesso on Monday said, following a meeting with French counterpart Francois Hollande, that French justice had no right to investigate his alleged ill-gotten gains. "What we would like to recall is the principle to which we all subscribe on the international level, which is that of non-interference in internal affairs," Republic of Congo President Sassou Nguesso told journalists after more than an hour of talks with Hollande.

At least two people were confirmed dead and dozens feared trapped after a building under construction collapsed in Tanzania's main city of Dar es Salaam on Friday. Hundreds of people, including residents and army rescuers, clawed through piles of rubble in an affluent area of the country's economic capital in the hunt for survivors. The building collapsed as many people including children were working or playing nearby, witnesses said. "I thought there was an earthquake and then I heard screaming. The whole building fell on itself," witness Musa Mohamed told AFP.