The suspect was arrested alongside three others in the Abeokuta and Owode Egba areas of the state by men of the Ogun State Police Command.
The state Commissioner of Police, Ahmed Iliyasu, paraded the suspects at the headquarters of the Federal Special Anti-Robbery Squad, Magbon, Abeokuta over the weekend.
Iliyasu said the four suspects specialized in killing for ritual purposes and belonged to two different ritual groups.
He said one of the groups, comprising Mudashiru and Rasheed Abass, who resided in the Totoro area of Abeokuta, were arrested on 5 October by operatives of FSARS.
Iliyasu said the two suspects were sighted on a motorcycle with a suspicious bag by policemen, who were on patrol, and they were stopped for a search.
He added that the search led to the discovery of fresh and dried human parts, dead lizards and charms, adding that they were serial killers.
Iliyasu also revealed that two other suspects, Lateef Aremu and Kolawole Shodipo, were arrested at the Owode-Egba area of the state the same day.
He said operatives of the FSARS received information about them and trailed them to their hideouts, where they were arrested with human skulls and bones.