Several passengers who ran to escape being kidnapped sustained several injuries.
Benson had allegedly attacked Idowu at his residence at Oba-Ile by pretending to be a hired assassin.
Two residents of the Ilara Mokin community were crushed to death by a commercial bus on Sunday.
The Ondo State Police Command has arrested 64-year-old Fasoyin, who was alleged to have shot his grandson.
The suspect and his gang had initially succeeded in kidnapping Mrs Grace Faduyile, but their cover was blown by community members who notified police.