BARRINGTON, Ill. (CBS) -- 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. 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.

A 46-year-old man was charged with first-degree murder in the shooting death of a north suburban endocrinologist he shares a child with, Barrington police announced Tuesday.  William R. Zientek is

Grisly new details were revealed in court Wednesday regarding the murder of a woman in Barrington on Sunday during a fatal encounter with her ex-boyfriend.

A 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 of their daughter.

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.

The man accused of murdering his estranged girlfriend, Dr. Olga Duchon, in suburban Barrington appeared in court on Wednesday, and new details about the case have now come to light.