According to reports, the siblings were killed by generator fumes at their home in the Southern state.
The tragic incident has left the parents and other family members in lament as the corpses of the children have since been deposited in the mortuary.
Last year, six members of a family of seven were found dead in their apartment in Benin, Edo state (Read here).
According to information gathered, the victims included the mother of the house and five children, including a set of twins.