Dosumu was reported to have killed about 15 persons in Iperu and Ogere communities, in Ikenne Local Government Area of Ogun State.
It was earlier reported that Dosumu had killed a community leader, Elder Oladeji Olatunji, who was the Vice-Chairman of Oluwatedo Community Development Association.
DailyPost learnt that Spartan was arrested around 1am and was immediately transferred to the police headquarters, Eleweran, Abeokuta.
It was gathered that the suspected serial killer was badly shot by the police when he tried to escape arrest.
Ogun police spokesman, DSP Abimbola Oyeyemi, confirmed the arrest of Dosumu, promising to give details later.