Unidentified Fulani herdsmen on Tuesday night attacked the head if the Special Anti-Robbery Squad in Saki, Oyo State, Mr. Sani Magu, and a police informant.
The police officers had gone to a village on Saki-Ogbooro road, in Oke-Ogun area of the state to investigate an incident involving herdsmen when they were surrounded with cows and attacked.
One other member of the team is lying critically ill at the Baptist Medical Centre in the area.
The informant was first killed before the policemen were attacked.
Spokesman for the state police command, Adekunle Ajisebutu, confirmed the incident and added that four suspects had been arrested.
The police reinforced and invaded the nearby forest in search of the herdsmen..
Tension rise in the area as the indigenes prepared for any eventualities.