An explosion has reportedly targeted the convoy of an All Progressives Congress (APC) governorship candidate in Borno State.
The incident occurred as the convoy was travelling in the state, with preliminary reports suggesting that the blast may have been linked to an attack by Boko Haram militants.
There were no immediate official details on the cause of the explosion, the number of casualties or the extent of damage.
Security agencies are yet to issue a comprehensive statement on the incident, while efforts are reportedly under way to establish what happened and secure the area.
Borno, which has faced more than a decade of insurgency, remains a major security flashpoint in north-eastern Nigeria, where Boko Haram and other armed groups have carried out attacks against civilians, security forces and political targets.
Further details are expected as authorities continue their assessment of the incident.
