PHILADELPHIA (CBS) – Toys “R” Us is pulling hoverboards from its website after a warning from the Consumer Product Safety Commission.

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Once the hot holiday toy, the CPSC says the self-balancing scooter is responsible for more than 50 reported fires since December.

The fires appear to stem from excess heat, generated by the boards’ lithium batteries.

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The Commission is now telling manufacturers to raise safety standards immediately.

The Safety Institute founder and president, Sean Kean says, “This is really a shot across the bow from the Consumer Product Safety Commission saying if you are bringing product in and you are not meeting these standards then we’re going to consider them defective.”