A police officer has been shot and killed in Tarpon Springs, Florida.

The Pinellas County Sheriff's Office said the shooting occurred at around 3am and that a suspect has been taken into custody.

A news conference is to be held later.

The officer's death followed a shooting in New York City yesterday afternoon, when a gunman shot dead two police officers and then killed himself.

Authorities said that shooter had indicated on social media that he might seek revenge for recent US police killings of unarmed black men.

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