Survivors and families of victims of one of the deadliest mass shooting in years are suing the United States, alleging it failed to stop the shooter despite numerous warning signs.

The shooting in Lewiston, Maine, was carried out by a member of the U.S. Army Reserve who killed 18 people. Previous reports revealed there were multiple indications of potential danger before the attack.

ADDITIONAL REPORTING | Scripps News investigates missed warnings before 18 died in Maine mass shooting

A military investigation found “multiple failures” leading up to the tragedy, and the gunman's declining mental health had been known to local police and military leaders for months.

"If there's anyone in the public that believes that you have information that would be valuable — you've never been able

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