NEW YORK (AP) — A three-month-old baby girl has been pronounced dead after she was discovered unconscious in a Bronx apartment by her older sibling.

Police say Fiona Hern was discovered unconscious and unresponsive Saturday morning. The baby was rushed by ambulance to Jacobi Hospital where she was pronounced dead at about 11 a.m.

Police say the older sibling claimed she put the baby to bed, went to sleep herself and when she woke up the baby was unconscious.

The Medical Examiner hasn’t yet determined a cause of death and the incident is under investigation.

You may share your thoughts in our comments section below…

(Copyright 2013 by The Associated Press. All Rights Reserved.)

More From CBS New York

Download Weather App

Watch & Listen LIVE