William R. Zientek, 46, is charged with first-degree murder in the slaying Sunday of endocrinologist Olga Duchon in the 400 block of West Russell Street. Zientek is being held at Cook County Jail. Authorities say the pair were the parents of a 3-year-old child.

Barrington police have charged a 46-year-old man with first-degree murder in connection with the shooting death of a renowned doctor Sunday evening. Barrington resident William R. Zientek is accused

Olga Duchon, 42, of Vernon Hills, died after being shot in a Barrington townhome, hours after speaking at a medical association meeting.

The suburban man accused of shooting and killing a prominent Lake County endocrinologist will make his first court appearance Wednesday, according to officials.

The Barrington man suspected of killing north suburban endocrinologist Olga Duchon was ordered detained Wednesday after prosecutors alleged he lured her to his home and fatally shot her in front

A man has been charged with murder in a shooting that killed a doctor in Barrington this past weekend. William Zientek, 46, stands charged with first-degree murder in the shooting that killed Dr. Olga Duchon.

William Zientek, 46, stands charged with first-degree murder in the shooting that killed Dr. Olga Duchon. He is due for a detention hearing on Wednesday at the 3rd District Cook County Courthouse in Rolling Meadows.

The suburban man accused of shooting and killing a prominent Lake County endocrinologist will make his first court appearance Wednesday, according to officials.