At the request of law enforcement officials, a judge ordered a man, who reportedly corresponded with the shooter about a second attack, to surrender his guns.
Chen Jinping used the office in Lower Manhattan to quash dissent against the Chinese government. The Justice Department is fighting Beijing’s efforts to wield its influence secretly.
He had been hailed by Chinese state media as a model for his efforts to promote Beijing’s interests in the United States. He was in fact an F.B.I. informant.
Leaders of the big telecommunications companies were summoned to the White House to discuss strategies for overhauling the security of the nation’s telecommunications networks amid growing alarm at the scope of a Chinese hack.