A 14 year old girl has been confirmed dead at Ojota area of Lagos state after police fired shots to disperse Yoruba nation agitators.
But the police have denied firing live bullets at the protest.
The agitators besieged Gani Fawehinmi Park in Ojota on Saturday amid tight security.
They arrived at the venue while Hakeem Odumosu, commissioner of police, was addressing journalists.
The police shot into the air and fired teargas to disperse the agitators.
The police also unleashed water cannon on the protesters and arrested a number of the agitators.
After the encounter, a young girl identified as Jumoke was left dead.
Residents allege that the lady, who sells yoghurt drinks, was killed by a stray bullet from the police gunshots.
She was said to have died after police fired at a protester who was chased into a neighborhood near Total petrol station opposite the protest venue.
Officers of the state police command have taken the body to an unknown location.