Mr Sani polled 9,105 votes to secure the APC ticket.
APC officials praised the peaceful conduct of the exercise.
Mr Barau thanked party members for their support.
Mr Bello polled a total of 72,349 votes to defeat his challenger, Ibrahim Yakubu Adoke, who polled 315 votes.
According to her, the so-called primary elections are unconstitutional.
The Ooni expressed sadness over the loss of lives recorded during the incident.
He also urged the National Assembly to expedite the passage of legislation establishing state police to strengthen security.
They urged the federal and state governments to ensure the swift release of the victims.
According to the governor, no society can attain sustainable development where the rule of law is weak.
He said the policy could aid early detection of substance abuse and enable timely intervention.
