Officials said the man did not appear to be targeting Trump or others involved in the trial
"The terrorists want to make us lose sight of what is important to us, break down our cohesion and sense of community as well as inhibiting our way of life, our openness and our willingness take in people who are in need," she told a news conference for which she interrupted her vacation.
"They see hatred and fear between cultures and they see hatred and fear between religions. We stand decisively against that," she added.