Morgan said nearby Weigand Elementary School and Southwest Middle School also were locked down, as a precaution.
By the end of the day, officers in riot gear were escorting students in groups of 20 or so off the campus.
Worried parents -- one woman sat crying in a chair and being consoled -- waited anxiously to be united with their children.
One man said he expects the situation to be resolved off campus. "We might as well look for it to carry on in the streets because that is the next step," he said.
Stephanie Roach just wanted to see her children.
"That's all I want," she kept repeating..."