The service for the funeral ceremony of forty worshippers killed was held at the St. Francis Catholic Church hotel, Owo Ondo State.
The worshippers were killed by gunmen on June 5 while several others were injured.
Midas Hotel Owo, the venue of the church service is manned by security operatives including military personnel, men of the Nigerian Police Force, operatives of Nigeria and Civil Defense Corps, and men of the Amotekun corps.
Those who attended the service were thoroughly checked before they gained entry to the venue.
Newsflash Nigeria understands that 21 coffins were brought to the church for the funeral service.
The funeral mass began at 10:00 am after the caskets bearing the bodies of the deceased were brought in.
Governor Rotimi Akeredolu and top government officials are present in the grace service.