Over 200,000 people have been displaced by COCEDO rebels in last two months, says UN radio.
Women and children among those murdered in two separate attacks in restive Ituri and North Kivu provinces of Democratic Republic of Congo, officials say.
A government-led military operation against various armed groups in the Ituri region of the Democratic Republic of Congo has caused hundreds of thousands to flee the region.
A self-styled prophet and former member of Parliament, Ne Muanda Nsemi has a strong following in western Congo and has been a thorn in the side of successive governments.
Officials of restive Beni region in Democratic Republic of Congo blame ADF fighters for massacre in Alungupa village in "surprise" attack.
Citing witness accounts, Kinshasa public security chief Miguel Bagaya said the lorry smashed into a taxi bus and other vehicles as well as pedestrians after its brakes failed.
At least 62 civilians killed in a series of attacks by ADF militants this week in eastern Democratic Republic of Congo, officials say, while an NGO says seven people were killed by Mai-Mai militia in volatile Beni region.
The Congolese rights group said that rebels from the Allied Democratic Forces had killed at least 43 people since Friday in and around Beni, the epicentre of the ongoing Ebola epidemic.
Fatalities were caused by police firing on protesters in eastern Democratic Republic of Congo. A senior UN official responded to the protests and attacks against peacekeepers and Ebola health workers, saying they were planned, organised and funded.
The health workers were killed when Mai-Mai fighters attacked a centre run by the United Nations health agency overnight in Biakato area of the Democratic Republic of Congo, local officials say.
UN mission MONUSCO spokesman said a "rapid intervention force" of peacekeepers was dispatched to the area in the morning.
Citizens of Beni and Butembo have lashed out at the perceived failures of the Congolese authorities and UN to quell a notorious armed group. The unrest is feared to impact the Ebola outbreak as WHO evacuates 49 Ebola staff out of Beni.
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