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.

One year after an Army reservist perpetrated a mass shooting across Lewiston, Maine, lawyers representing survivors and families of the victims said Tuesday they are pursuing negligence claims against the federal government that could pave the way for 100 individual lawsuits.

Travis Brennan, one of the lawyers representing the survivors and families of those killed, said there were “numerous unheeded red flags and warning signs” that should have caused the Army to take action.

Lawyers for 100 survivors and family members of victims of the deadliest shooting in Maine history have begun the formal process of suing the Army for failing to act to stop the shooter, a reservist.

The survivors and families of victims of the mass shootings in Lewiston, Maine last year are taking legal action against the federal government and army over purported negligence in the case. Why it matters: The plaintiffs' decision to serve legal notices could open the doors to more than 100 individual lawsuits,