The Peoples Democratic Party governorship primaries in Gombe State, which began peacefully on Sunday, could not be completed due to violence that erupted during the casting of votes.
The News Agency of Nigeria is reporting that the election commenced around 8:30pm and the violence erupted barely 30 minutes after.
The action was triggered by delegates who suspected that a government official was manipulating votes.
NAN is also reporting that the election venue was at the Banquet Hall of the Government House, Gombe.
Governor Ibrahim Dankwambo, Deputy Governor Charles Iliya and other party officials had earlier cast their votes and left the venue before the incident.
Security agents were not able to prevent the situation from escalating, while the electoral committee went into a meeting behind closed door.