In the attack, a police inspector in the convoy was killed.
In a reaction to the incident, a group, the Edo Peace Initiative, led by its national president, Barrister Eghosa Igunbor, accused the commissioner of police, Funsho Adegboye, of compromise.
Some hoodlums laid siege on the airport when Okpebholo arrived there from Abuja in the company of other passengers, including Philip Shaibu, who was reinstated as deputy governor of Edo State by the courts.