The F.B.I. is investigating 37 men and women similar to the killing of Officer Brian Sicknick, the Capitol Law enforcement officer who died just after becoming injured for the duration of the professional-Trump riot on Jan. 6, according to an F.B.I. memo sent to the private sector and other people on Friday. The Moments received a copy of the report.

Mr. Sicknick was struck with a hearth extinguisher as a violent mob flooded the halls of Congress, in accordance to two law enforcement officers. Lawmakers hid below their desks from violent protesters just after President Trump inspired them through a rally to head to the Capitol. Mr. Sicknick died in the clinic exactly where he was acquiring therapy for his injuries.

Fourteen other Capitol Law enforcement officers were hurt in the mob very last 7 days, the memo explained.

Law enforcement officers are bracing for much more unrest in the days primary up to the inauguration.

Because the Jan. 6 siege, intelligence officials have seen Chinese, Iranian and Russian initiatives to admirer the violent rhetoric, in accordance to a joint menace evaluation dated Thursday. The amplification is reliable with past initiatives to just take edge of divisive Republican rhetoric, these as the Russian efforts to amplify disinformation spread by Mr. Trump for the duration of the campaign about the security of mail-in voting.

The inspectors basic for a number of federal organizations, including the departments of Justice and Homeland Security, announced on Friday that they had opened an investigation into the response to the riot at the Capitol. The watchdogs will also seem at how federal companies shared intelligence forward of the riot.

Zolan Kanno-Youngs and Julian E. Barnes contributed reporting.