At least 10 people were killed and several others injured after a bomb went off near a church on Sunday.
The church reportedly belongs to the Protestant church in the eastern Congolese city of Kasindi, on the border with Uganda.
Kasindi is in a province where Congolese and Ugandan forces have launched a campaign against the Allied Democratic Forces (ADF).
Reports indicate that ADF militias have been targeting large gatherings in the region. However, the group has not claimed responsibility for the bombing.