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Police on North Andover, Mass., are investigating after spiders and scorpions were found in containers in a pet store.

Officers were called to Petco on Waverly Road around 2:45 p.m. Friday after containers with the arachnids were found in the restroom.

According to police, a total of 10 venomous scorpions were found in the boxes: five Asian forest scorpions, one Brazilian scorpion and four 6-eyed sand spiders.

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North Andover and environmental police are investigating just how the arachnids ended up in the bathroom and reviewing surveillance video at the store.