A Montgomery County woman is suing a footwear maker after her 6-year-old son's foam clog got stuck in an escalator at the National Aquarium in Baltimore in April, injuring his toe.

Kerry Burdick of Eagleville, claims Colorado-based Crocs Inc. knew its clogs were unsafe on escalators and did not warn consumers. The lawsuit seeking more than $7.5 million in damages was filed Wednesday in U.S. District Court for the Eastern District of Pennsylvania.

According to a document Crocs filed in a separate case, more than 200 people worldwide have reported similar incidents, but the company has said its shoes aren't to blame. Crocs did not immediately return calls for comment.

In July, the company said it would add escalator safety warning tags to its shoes next year.

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Information from: The (Baltimore) Sun, http://www.baltimoresun.com