Lawyers for 100 survivors and relatives of victims of Maine's deadliest shooting say the Army failed to stop the reservist responsible for the crime.

More than 100 family members and survivors of Maine’s worst mass shooting are planning to file a lawsuit against the U.S. Army for failing to respond to warning signs that the reservist shooter was a threat.

The claim says the Army ignored warning signs, which included a decline in the reservist's mental health and that he had a "hit list."