The two suspects remain at the centre of the ongoing investigation as detectives work to establish the full circumstances of the incident and gather evidence for possible prosecution.
The attackers then pursued more than 50 residents who had sought refuge in a Protestant church. After forcing them out, they executed 22 people in the church courtyard and 12 others behind the church.
The massacre began on Friday, December 6, when gang members killed nearly 60 individuals using machetes and knives, followed by another 50 on Saturday.