Man fatally shoots 10-year-old son, daughter then fatally shoots himself, police say

CHICAGO -- A murder-suicide investigation is underway after two 10-year-olds and a man were found fatally shot in a West Ridge apartment, according to police.

Officers were called to an apartment on the 6200 block of North Richmond Street around 11 a.m. on Monday. Police found the body of a 45-year-old man, who officials say fatally shot his two children then fatally shot himself in the face. Police found the two 10-year-olds, a boy and girl, with gunshot wounds to the head.

The Chicago Tribune said police were called after a nanny was unable to enter the home. She tried calling the children's mother, who is separated from the father.

The Cook County Medical Examiner identified the children as Addison and Mason Sanders. The name of the 45-year-old has not been released.

One neighbor said he heard three loud gunshots six hours before police found the bodies.

No further information was provided. The investigation is ongoing.