The FBI and Department of Homeland Security have warned US law enforcement of increased threats after the search of former president Donald Trump's home in Florida last week, US media outlets reported.
The internal memo was shared with law-enforcement officials across the US late on Friday night.
Among the concerns was a “a threat to place a so-called dirty bomb in front of FBI Headquarters and issuing general calls for 'civil war' and 'armed rebellion'", CBS reported the bulletin as saying.
The two agencies identified “articulated threats and calls for the targeted killing of judicial, law enforcement and government officials associated with the Palm Beach search, including the federal judge who approved the Palm Beach search warrant”, CBS reported.
The threats, mainly made across online platforms, identified by the FBI and DHS after the agency executed an authorised search warrant to retrieve classified documents from Mr Trump's Mar-a-Lago estate.
Mr Trump, his allies and some Republican members of Congress reacted with fury to the August 8 raid, with some calling for the FBI to be de-funded.
Some have accused the Justice Department of being politically motivated.
“The details of this DHS-FBI bulletin are stunning,” said Jonathan Greenblatt, chief executive of the Anti-Defamation League.
"Let’s be clear: this is the direct result of irresponsible, inflammatory rhetoric demonising law enforcement from right-wing politicians and commentators."
An armed man who tried to break into an FBI office building in Cincinnati, Ohio, was killed in a stand-off with police last week.
In his only remarks since the FBI's search of Mr Trump's home, Attorney General Merrick Garland condemned the “unfounded attacks” on the Justice Department's professionalism and its agents.
Donald Trump supporters outside Mar-a-Lago - in pictures
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Supporters of former US president Donald Trump protest against the FBI raid at Mar-a-Lago in Palm Beach, Florida. South Florida Sun-Sentinel / AP -
Trump supporters demonstrate outside Mar-a-Lago. Bloomberg -
Trump supporters wave flags and hold signs outside Mar-a-Lago after the FBI carried out a search warrant at the former president's residence. EPA -
Mr Trump is facing intensified legal and political pressure after FBI agents searched his Florida home to investigate whether he took classified documents from the White House when he left office. Bloomberg -
Supporters of Mr Trump demonstrate outside Mar-a-Lago in Palm Beach. Bloomberg -
A Trump supporter waves a flag outside Mar-a-Lago. Bloomberg -
A Trump supporter drives past the former president's estate. AP -
Trump supporters, members of the media and law enforcement gather near Mar-a-Lago. The Palm Beach Post / AP -
A flag flies in the air near former President Donald Trump's Mar-a-Lago estate. AP -
A Trump supporter holds the Betsy Ross flag at a gathering outside the former president's Mar-a-Lago home. Reuters
