Florida school shooting: Trump links FBI's missteps to Russia investigation
"WATCH: Teen Parkland survivor tears into Trump, Republicans and the NRA in electrifying statemen"
26 minutes ago
Wednesday's attack in Parkland was the deadliest US school shooting since 2012 Getty Images
President Donald Trump has rebuked the FBI for missing signals before Wednesday's school shooting in Florida.
The agency was "spending too much time trying to prove Russian collusion with the Trump campaign", Mr Trump tweeted.
"There is no collusion. Get back to the basics and make us all proud."
The FBI has admitted it failed to act on a tip-off about suspected shooter Nikolas Cruz, who has confessed to the shooting at a high school in Parkland in which 17 people died.
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