The Osage County Sheriff’s Office arrested a Barnsdall man on a second-degree murder complaint in a fatal stabbing that took place in the predawn hours of May 9.

The Sheriff’s Office booked a man identified as Dakoda Aaron McCauley, 24, of Barnsdall, just before 9:30 p.m. May 9.

Sheriff Eddie Virden said the afternoon of May 9 that McCauley had told investigators he acted in self-defense against a houseguest who turned violent.

Virden said the morning of May 10 that further investigation showed McCauley’s initial story didn’t hold up.

“It just didn’t work,” Virden said, explaining that investigators obtained fresh information that led to the arrest of McCauley. The sheriff added that accounts of the incident that had been provided to investigators changed after further investigation.

The sheriff identified the deceased man as Frankie Cotto, 30.

The Sheriff’s Office began work on the case when it received a call about 4:30 a.m. May 9, and responded to the scene of an altercation.

Virden said a homeowner, later identified as McCauley, initially told deputies that a guest at his residence attacked him with a knife. The homeowner said that a struggle ensued and he took the knife away from the attacker and threw both the guest and the knife out the door, Virden said.

McCauley told deputies the ejected guest then picked up the knife and, instead of leaving, attacked him again, Virden said. The incident concluded with the attacker dead, the sheriff said.

District Attorney Rex Duncan said Monday that he was reviewing the case to make a determination about formal charging of McCauley.