AUBURN (CBS) – A 4-year-old boy from Dudley has died after falling from an escalator inside the Sears at the Auburn Mall.

Auburn Police Det. Sgt. Jeff Laurie tells WBZ-TV that the boy was on the second floor around 6:30 p.m. Friday night, when he grabbed the moving rail of the escalator with both hands.

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The force threw him over the rail and down a 6-inch gap between the escalator and a plastic barrier. The child fell two stories and landed on a store display case.

WBZ-TV’s Jim Smith reports.

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He suffered serious head injuries and was rushed to UMass Memorial Medical Center in Worcester.

Police said the boy’s mother was with him when the accident happened.

The store was closed while investigators looked into the accident. It later reopened.

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The state Department of Public Safety’s Board of Elevator Regulations is in charge of elevator inspections and is part of the investigation.