FBI has pinpointed who killed Officer Sicknick -- but they have yet to identify suspect's name: report

Federal officials are making progress in their investigation of the death of a Capitol Police officer from the January 6th insurrection.

"The F.B.I. has pinpointed an assailant in its investigation into the death of Brian D. Sicknick, a Capitol Police officer who was injured while fending off the pro-Trump mob that stormed the Capitol last month and later died," The New York Times reported Friday, citing "two law enforcement officials briefed on the inquiry."

"The F.B.I. opened a homicide investigation into Officer Sicknick's death soon after the Jan. 6 attack on the Capitol. Investigators initially struggled to determine what had happened as he fought assailants. They soon began to suspect his death was related to an irritant, like mace or bear spray, that he had inhaled during the riot. Both officers and rioters were armed with such irritants during the attack," the newspaper reported. "In a significant breakthrough in the case, investigators have now pinpointed a person seen on video of the riot who attacked several officers with bear spray, including Officer Sicknick, according to the officials. And video evidence shows that the assailant discussed attacking officers with the bear spray beforehand, one of the officials said."

However, investigators have yet to identify the suspect by name.

The FBI has been using social media to track down suspects from the massive amount of pictures and videos of the attack.

Here are some of the FBI's recent posts: