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John McCall/South Florida Sun-Sentinel, via Associated Press
A woman who knew the teenager accused of shooting 17 people to death at a Florida high school last week told the F.B.I. last month that Nikolas Cruz possessed an arsenal of weapons and ammunition, and she worried he might be “getting into a school and just shooting the place up.”
“I know he’s going to explode,” the woman said in a call to the F.B.I.’s tip hotline on Jan. 5, according to a transcript of the call obtained by The New…