He had earlier been nominated as Makinde’s running mate for the 2023 governorship election.
The runner-up was the incumbent governor, Gboyega Oyetola of the All Progressives Congress (APC), who polled 375,027 votes.
The South-West Coordinator of the National Emergency Management Agency (NEMA) Ibrahim Farinloye who confirmed the incidents said efforts are on to retrieve household items from the collapsed structure belonging to Christ Divine Church.
Mr Oyebanji is the anointed candidate of the incumbent governor, Kayode Fayemi.
The Ondo Catholic diocese conducted the mass funeral of the victims numbering 40, including 20 women and 6 children, a pamphlet printed for the funeral, which had their pictures, showed.
Mr Makinde last week opted to run with the chairman of the State Housing Corporation, Barrister Bayo Lawal as his running mate for a second term in office.
Alleged Fulani herdsmen invaded the Christian gathering while church service was ongoing Sunday morning and opened live rounds on worshippers.