The Commissioner of Police in the state, Mr Fimihan Adeoye, made the disclosure at a news conference in Osogbo on Friday.
According to Adeoye, one Akeem Ojuolape, who allegedly gave the banned substance to the minor was also apprehended.
He said one Ahmed Azeez was also arrested along with the duo on May 14, adding that the suspects would be charged to court at the conclusion of investigation.
The commissioner, however, said the 13-year-old boy would be rehabilitated.