US President Donald Trump says he will send the National Guard to the city of Memphis in Tennessee to address crime concerns there with the support of the mayor and the governor.

Trump has sought to make crime a central issue, with his administration being involved in an unprecedented police takeover in the US capital Washington DC last month.

His crackdown on Democratic-led municipalities has spurred protests, including a demonstration by several thousand people in Washington DC last weekend.

"We're going to Memphis. Memphis is deeply troubled," Trump said in an interview with Fox News.

"We're going to fix that, just like we did Washington."

Trump said Memphis' mayor, a Democrat, was "happy" with the move.

The office of Memphis Mayor Paul Young did not immediately respond to a reque

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