Protests erupted over concerns about the independence of the Election Commission.
Police in the Democratic Republic of Congo fired tear gas as members of the ruling party tried to block thousands of processions in search of a neutral election commission.
On Saturday, about 10,000 protesters marched through the streets of Kinshasa and tore down a statue of President Felix Shisekedi.
Witnesses told Reuters that members of their ruling Democracy and Social Progress (UDPS) party tried to stop the procession by throwing petrol bombs.
The police threw tear gas to disperse them and the protest continues.
Protests erupted over a proposal by six religious groups to appoint Dennis Kadima as head of the Independent National Election Commission (CENI).
According to the constitution, religious groups, which are obliged to nominate the leadership of the CENI to the senate, have been in conflict for months and have failed to reach an agreement.
Kadima’s nomination was met with outrage because he was seen as corrupt and close to Tishekedi.
Political analysts and diplomats have criticized CENI for its role in the controversial 2018 election, where Tsisekedi emerged as president.
Opposition leaders Martin Faylu and Tishekedi made an election deal before the 2018 elections, but Tishekedi eventually split to form another political group before the vote.
CENI declared Tsisekedi the winner, while Fayulu, who said he had won a landslide victory, finished second.
Fayulu was among the leaders of Saturday’s protests with former Prime Minister Adolf Muzito.
When Congolese voters return to the polls in 202, which is expected to be Tisheke’s second term, CENI will once again play a key role.