Police officers in London are thanking a citizen who helped them nab a fleeing suspect...using only his foot. 

Kingston Police  tweeted out a security video showing a 17-year-old suspected drug dealer making a run for it as authorities chase him down.

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As he tries to get away, he runs by a couple of innocent bystanders. One of them decides to simply stick out his foot and trip the teen, all while keeping his hands casually in his pockets. Police were able to catch up and make the arrest.

Kingston Police made their gratitude to the unknown man public on Twitter: "Thank you to the member of public that recently helped during a foot chase! ."

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