The incident happened on Sunday, around 1:30 pm when the church was about to dismiss service.
The assailants were said to have shot indiscriminately to scare people.
Narrating the incident to Daily Post, a congregant who identified herself as Dr Blessing, said the church had just concluded thanksgiving and congregants were members were heading to the car park to drive out to the venue prepared for merriment when the gunmen struck.
He said, “The church had just dismissed so everyone was heading to the car park with the intention to go to the home of the member, only for an ash-coloured Sienna vehicle to drive in shooting sporadically.