Updated

An Amber Alert was issued for a 7-month-old boy who was in his mother's minivan when it was stolen outside her workplace in Chicago.

Illinois State Police are searching for Osial Hernandez, who was apparently inadvertently kidnapped during a car theft on the northwest side of the city some time between 3:30 and 5 a.m. Friday.

His mother, who has a newspaper delivery route, left her infant son in her warm, idling vehicle while she ran inside the distribution center to collect more papers. She reportedly didn't want him to get cold.

When she emerged, the minivan and her baby boy were gone.

The child is believed to be in a light green, 2003 Dodge Caravan, with Illinois license plate number X53 3131.

The Amber Alert describes the boy as a Hispanic baby with brown hair and eyes.

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The Associated Press contributed to this report.