Gunmen disrupted the Kogi People’s Democratic Party (PDP) governorship primary that was ongoing at the Lokoja Confluence Stadium in the early hours of Wednesday.
Before the disruption, heavy windstorm and rain had threatened to bring the exercise to an end.
Aspirants, delegates and others scampered for safety.
The number of those that sustained injury was yet to be ascertained.
The chairman of the Electoral Committee and Adamawa Governor Ahmadu Fintiri was among those who escaped unhurt.