Maman Sidikou yesterday told the Security Council that the elections are a deeply divisive issue because there is still no agreement on an electoral calendar or a budget for the elections.
In addition, he said, a national dialogue announced by President Joseph Kabila to forge consensus on the electoral process hasn't begun, in part because many major opposition groups are opposed.
Congo hasn't had a peaceful transfer of power in 55 years of independence. Kabila is barred by the constitution from seeking a third term but is widely believed to be seeking to prolong his rule.
"In the absence of agreement on the electoral process, political polarization has heightened tensions and contributed to an atmosphere of increased harassment and human rights violations," he said.
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Sidikou noted that since last year, the UN peacekeeping force in Congo has registered more than 260 human rights violations related to elections, "mostly against opposition members, civil society representatives and journalists."
Eastern Congo, home to a myriad of armed groups and militias, many vying for control of the region's vast mineral resources, remains the scene of conflict.
He blamed the FDLR and ADF militant groups, among others, for posing a serious threat to civilians in those areas.