A similar protest was held on Monday, May 18, in Ogbomosho.
She said the victims had spent 13 days with the abductors, under harsh weather conditions.
The minister expressed heartfelt condolences to the families, friends and relatives of the students.
On May 15, gunmen abducted pupils and staff in Oriire LGA schools.
Popular radio broadcaster Oriyomi Hamzat has emerged as the Accord Party’s consensus governorship candidate in Oyo state.
Mr Owoseni said the decision followed the infiltration and manipulation of the party structure.
The police command in Oyo state says it killed three suspected kidnappers and rescued a hostage.
“As we approach the next election, there is a strong gang-up against us. They are plotting to field several candidates from our region in the South,” said Mr Osoba.
The consulate warned Nigerian residents in South Africa against physically engaging with demonstrators.
The police spokesman said preliminary findings showed that about six armed men invaded the facility and whisked the victims away to an unknown location.
