HIGHLAND PARK — An infant was found abandoned at a Middlesex County home on Monday and pronounced dead shortly after — the third discovery of an abandoned baby in the past week, and the second to die.

Update, 8 p.m.: A 14-year-old girl has been charged in the baby's death.

A woman told News 12 New Jersey she found the baby boy next to her home. She told the news outlet the child looked like a baby doll.

Middlesex County Prosecutor Andrew C. Carey and Chief Stephen Rizco said Monday afternoon the baby was transferred to Robert Wood University Hospital in New Brunswick, then pronounced dead. An autopsy by the Middlesex County Medical Examiner will be scheduled, they said.

The Patch reported a heavy police presence on Lincoln Avenue.

A newborn was found Sunday afternoon on the porch of a Trenton home inside a duffel bag wrapped in a blanket. The black or Hispanic infanl,estimated to be 24 to 48 hours old, was taken to a local hospital and was in good health.

"With the public's help we're trying to locate the infant's mother to put closure to this and find out what happened," Trenton Police Lt. David Cruz said of that case.

In another incident, the Hudson County Prosecutor's Office is also asking for the public's help finding who left a deceased 10-month-old baby girl in a suitcase last week along PATH tracks.

Contact reporter Dan Alexander at Dan.Alexander@townsquaremedia.com or via Twitter @DanAlexanderNJ