AYER (CBS) – Police have a message for drivers: Put down the Pokemon.

The Pokemon Go app has people glued to their smartphones, and some refuse to take a break even when they’re behind the wheel.

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So Ayer police have put up a sign to warn Pokemon trainers about the dangers of distracted driving.

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“If people are having trouble navigating the world on foot while using Pokémon Go (and you know who you are!), just imagine the catastrophes that can happen while driving a vehicle!” the department said in social media postings.

Unfortunately, some have already learned this lesson the hard way.

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A crash in New York related to Pokemon Go (Image credit Auburn police)

A crash in New York related to Pokemon Go (Image credit Auburn police)

In Auburn, New York, police say a driver was lucky to escape serious injury after slamming into a tree while playing Pokemon Go.