Nashville school shooter who killed six sent warning message before attack

Audrey Hale, 28, said something bad is about to happen' as police accused of lack of urgency after being alerted by suspect's friend

A shooter who murdered three children and three adults at a Christian elementary school in Tennessee on Monday sent social media messages to a friend before the attack, warning: Something bad is about to happen."

The messages from Audrey Hale, 28, who was shot dead by police responding to 911 calls from the Covenant school in Nashville, were basically a suicide note", the killer wrote, and you'll probably hear about me on the news after I die."