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WASHINGTON - Two people were killed and at least 20 others wounded in a mass shooting early Sunday outside a club in Hialeah city in the US state of Florida, said Miami-Dade police director Alfredo Ramirez III.

"I am at the scene of another targeted and cowardly act of gun violence, where over 20 victims were shot and 2 have sadly died," Ramirez said in a tweet.

He said several attackers "shot indiscriminately into a crowd."

According to CNN, three people got off a white Nissan Pathfinder with assault weapons and handguns and started firing into the crowd that was gathered for a concert at the venue.