The FBI and the Department of Homeland Security have issued an unclassified joint intelligence bulletin warning of a spike in threats to federal law enforcement officials since the search of former President Donald Trump’s Mar-a-lago club in Florida, two senior law enforcement officials told NBC News.

“The FBI and DHS have observed an increase in threats to federal law enforcement and to a lesser extent other law enforcement and government officials following the FBI’s recent execution of a search warrant in Palm Beach, Florida,” the bulletin, dated Friday, reads, according to one official.

The bulletin, which advises that such threats are coming from online and other platforms, was sent out of an abundance of caution, according to the officials who spoke on condition of anonymity to discuss internal matters.