A resident of Inisa town, Osun State, Tunde Oyeniran, has allegedly hacked his wife and two children to death.
Oyeniran, a nurse, allegedly perpetrated the act on Friday, around 11pm, using a cutlass to kill his wife, Sarah, and the other two victims.
He also allegedly inflicted cuts on himself in the hand and stomach and raised the alarm, claiming that his family was attacked by hoodlums.
The Osun State Police Public Relations Officer, Yemisi Opalola, said Oyeniran was arrested where he was receiving treatment.
She said preliminary investigation revealed a foul play, adding that the State Criminal Investigation and Intelligence Department was already investigating the matter.
Then she said they would update on the crime.