Two people were killed and more than 20 were wounded in a mass shooting at a northwest Miami-Dade County banquet hall, police said.
Three assailants reportedly got out of the SUV and indiscriminately opened fire with rifles and handguns at the crowd outside the banquet hall, which had been rented out for a concert.
The Miami Heraldsaid 20 wounded victims were taken to local hospitals, and posted a photo of friends and relatives holding hands in prayer outside one trauma center.
"These are cold-blooded murderers that shot indiscriminately into a crowd, and we will seek justice", he said. "They say that some guys came out with hoodies and ski masks and just started spraying at the crowd", she said, adding that it was "very scary".
"I am at the scene of another targeted and cowardly act of gun violence", Miami-Dade police director Alfredo Ramirez wroteon Twitter.
"According to investigators, the establishment was hosting a scheduled event and several patrons were standing outside", Miami-Dade Police Department said in a statement. Sunday's shooting is the second significant gun attack in the area over Memorial Day weekend.
Marcus Lemonis, star of the CNBC show "The Profit", tweeted that he was offering a $100,000 reward to help authorities find and convict the attackers - an offer that was welcomed by authorities and local officials.
Homicides, mostly gun-driven, have surged in the country over the past year.
President Joe Biden last month branded U.S. gun violence an "epidemic" and an "international embarrassment".
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