Marple Police Chief Thomas Murray told reporters, "What we're finding out is he takes the baby a couple days a week and drops him at daycare. He forgot that the baby was in the car."
Police say the temperature in the car where the baby was found was over 110 degrees. The child was rushed by helicopter to Children's Hospital in University City in critical condition. Police call the incident a tragic tale.
"We have to pay attention. Everyone needs to be aware who they have, what their responsibilities are and take care of those that can't take care of themselves," said Chief Murray.
Authorities are pondering whether to file criminal charges against the grandfather.
