The gunman had posted on social media that he wanted to kill people and children, police said.
The man who in a Florida supermarket on Thursday had made repeated threats online, according to the sheriff. „There was a chance this could be stopped,“ Palm Beach County sheriff Ric Bradshaw said Friday. „You know why? The reason is, he is on Facebook. He has said, I want to kill people and children. You think a damn soul told us about that? No.
