Authorities in Tanzania have arrested at least six people, including four Saudi nationals, following a deadly attack on a church Sunday.
Two people were killed and 60 others wounded when an explosion went off in a Catholic church in the northern city of Arusha.
The attack occurred as the newly-opened church was about to hold its inaugural Mass, attended by the Pope's envoy to Tanzania.
Witness reports from the scene say a bomb or grenade was thrown into a crowd near the entrance of the church.
The arrests in the case were announced Monday by Arusha police commander Magesa Mulongo.