It was gathered that the late Osakue allegedly shot himself in the head with his service pistol in his residence located on Upper Sokponba on Wednesday.
The deceased was said to have sent a woman and a little boy, said to be living with him, on an errand before taking away his life.
It was also learnt that he did not leave any suicide note behind.
The late police officer was said to been in charge of training and development at the state police command after his recent posting from Ondo State.
It was gathered that the ACP had earlier suffered a partial stroke few years ago and was gradually recovering from it before the incident occurred.
It was gathered that a gunshot from the residence of the deceased was heard at about 5pm on December 28.
It was further learnt that the late Osakue had played host to some youths in his area last Christmas.
But his private residence was said to have been deserted since his demise, with Lexus jeep marked, NND-131HV, parked in front of it.
The Commissioner of Police, Haliru Gwandu, described the senior police death as a case of suicide.
Gwandu also explained that the pistol which he allegedly used to commit the act was signed for at the Ondo State Police command before he was posted to Edo.