The Democratic Republic Congo army said they have stopped an attempted coup involving Congolese and foreign soldiers.
Four opposition candidates have called for the entire election to be rerun after Wednesday's long delays.
Investigators say the civilians - including 12 children - were "arbitrarily executed" by M23 rebels.
The Hoja app was launched by two female entrepreneurs from the Democratic Republic of Congo.
People set fire to a big shiny pillar that appeared in Kinshasa sparking fears over its origins.
Police seize leader of sect that wants to revive pre-colonial Kongo kingdom, following deadly clashes.
