Authorities in Illinois say an 80-year-old man is dead and his 50-year-old son is in custody accused of killing him.

According to the Chicago Post-Tribune, Michael Yakubec was at St. Mary Medical Center in Chicago in a waiting room after John Yakubec was admitted with serious injuries.

Michael Yakubec reportedly faced questions at that time regarding the nature of his father’s injuries and vanished from the hospital.

After claiming his father fell in the shower and sustained what would be fatal head injuries, John Yakubec reportedly told officers and a chaplain at the hospital that he was gone at the time of the incident and returned home Thursday afternoon to find his unconscious father.

Not only did medical staff confirm the victim’s injuries did not appear consistent with those sustained in a fall, they reportedly told police that he was admitted to the hospital dry and wearing clothes.

Following an initial interview at the hospital, Michael Yakubec reportedly asked if he needed to retain an attorney. Shortly thereafter, his disappearance prompted a search and a public announcement labeling the suspect armed and dangerous.

The elder Yakubec died Thursday night at Stroger Hospital.

Hobart police tracked the suspect down on Saturday at his home on Oregon Street, according to reports. Police say he was found holed up in a locked room inside the residence.

Authorities also found two rifles in a closet along with blood in the bathroom, which they believe might have been the scene of the murder.

John Yakubec’s death was ruled a homicide by the Cook County Medical Examiner’s Office the same day.

On Sunday, the victim’s son appeared in Lake County Superior Court where he was charged with murder and ordered to be held behind bars without bail.

[Featured image: Michael Yakubec, Hobart Police]