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WILMINGTON, Ohio — A gunman who died in a shootout after trying to get inside the FBI's Cincinnati office appeared to have posted calls on social media for FBI agents to be killed and for people to take up arms and "be ready for combat" in the wake of the search at Donald Trump's home, a law enforcement official said.
Federal investigators are examining social media accounts they believe are tied to the gunman, 42-year-old Ricky Shiffer, and posts that urged violence after the FBI entered Mar-a-Lago in Florida, according to the official, who was not authorized to discuss the investigation publicly and spoke to The Associated Press on condition of anonymity.
At least one of the messages on Trump's Truth Social media platform appeared to have been posted after Shiffer tried to breach the FBI office. It said: "If you don't hear from me, it is true I tried attacking the F.B.I."
Another posted on the same site earlier this week from @rickywshifferjr included a "call to arms" and urged people to "be ready for combat" after the search.
Authorities also are looking into whether Shiffer had ties to far-right extremist groups such as the Proud Boys, the official said.
Shiffer was armed with a nail gun and an AR-15-style rifle when he tried to breach the visitor screening area at the FBI office Thursday, according to the official. Shiffer fled when agents confronted him.
He was later spotted by a state trooper along Interstate 71 and got into a gun battle that ended in his death, state police said.
The burst of violence unfolded amid FBI warnings that federal agents could face attacks following the search in Florida.
The FBI is investigating the attack as an act of domestic extremism, according to the law enforcement official.
Shiffer is believed to have been in Washington in the days leading up to the Jan. 6, 2021, insurrection and may have been at the Capitol that day but was not charged with any crimes in connection with the riot, the official said.
Officials have warned of a rise in right-wing threats against federal agents since the FBI entered Trump's estate in what authorities said was part of an investigation into whether he took classified documents with him after leaving the White House. Supporters of the former president have railed against the search, accusing the FBI and the Justice Department of using the legal system as a political weapon.
FBI Director Christopher Wray denounced the threats as he visited another FBI office in Omaha, Nebraska, on Wednesday, saying, "Violence against law enforcement is not the answer, no matter who you're upset with."
Violence against law enforcement is not the answer, no matter who you're upset with.
–Christopher Wray, FBI director
The FBI on Wednesday also warned its agents to avoid protesters and ensure their security key cards are "not visible outside FBI space," citing an increase in social media threats against bureau personnel and offices.
A now-suspended Twitter account, @rickyshiffer, shared the same profile picture as the Truth Social account and similar opinions, including a call for armed conflict in the U.S. this past spring.
It included posts saying that "elections are rigged" against conservatives and that the country faces "tyranny."
Shiffer was a registered Republican who voted in the 2020 primary from Columbus, Ohio, and in the 2020 general election from Tulsa, Oklahoma, according to public records.
Court records show the Ohio Department of Taxation filed suit against him in June, seeking a $553 tax lien judgment, according to court records listing him at an address in St. Petersburg, Florida. He also previously lived at several addresses in Columbus and in Omaha, Nebraska.
He enlisted in the Navy in 1998 and served on the USS Columbia submarine from 1999 to 2003, according to military records.
Contributing: Samantha Hendrickson, Julie Carr Smyth, Michael Balsamo, Ryan Foley, Jim Mustian and Rhonda Shafner.