The teen gave birth last weekend and attended school on Monday after allegedly committing the act and even showed staff members pictures of a newborn girl that she claimed she downloaded from the Internet.
But after employees noticed strange behavior - such as the girl asking if authorities could link her to the child through DNA and lying about the baby's age - they alerted authorities. She was arrested on April 25.
The child had been found by a construction worker a few hours after the child was left outside. The boy was born alive but died of asphyxia and possible exposure, authorities said.
The new mother said her ex-boyfriend was the father and when the child was born she feared her current boyfriend would notice and leave her.
Mora, who was scheduled to graduate from high school in June and attend college in the fall is facing charges of first-degree murder and is now being held on $500,000 bail.
Source: Chicago Tribune