Violent clashes have occurred between security forces and civilians in Kambia district following the enforcement of an order to close markets.
The government carried out the closures in response to a perceived lack of cooperation in its effort to trace 50 missing Ebola contacts linked to the recent new cases.
In one incident, a UNICEF vehicle was attacked and severely damaged. At least three people have been injured. The UN has banned all travel to the district for the time being.