The father left his Cadillac running, with Louis Trinidad, Jr., in the backseat, to go inside a store in Hartford.
That's when someone hopped in the car and drove off, without knowing there was a baby inside.
Luckily, a woman in Bristol who saw the Amber Alert and spotted the child called police.
After a few more tips were called in, police were able to track down the suspect and arrest him.
Louis and his dad were reunited in Bristol.
The investigation is ongoing.
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