US federal agents have raided the offices of US President Donald Trump’s personal lawyer Michael Cohen and seized documents, Mr Cohen’s lawyer Stephen Ryan says.
He said the search warrants were executed by the office of the US Attorney for Southern District of New York but they were “in part” related to special counsel Robert Mueller’s investigation.
“The decision by the US Attorney’s Office in New York to conduct their investigation using search warrants is completely inappropriate and unnecessary,” Mr Ryan said in a statement.
“It resulted in the unnecessary seizure of protected attorney-client communications between a lawyer and his clients.”
Mr Ryan did not elaborate further on the contents taken but a source said the FBI seized emails, tax documents and business records, according to the The New York Times.
A law enforcement source said the raids included both the office and residence of Mr Cohen.
Mr Cohen did not immediately respond to requests for comment, while a spokesman for Mr Mueller had no comment.
Mr Cohen is Mr Trump’s longtime personal lawyer.
He has been under heavy public scrutiny in recent months for his payment of $US130,000 to porn star Stormy Daniels, who claims to have had an affair with Mr Trump in the mid-2000s.
Mr Trump told reporters last week that he did not know about the payment.
Mr Mueller is investigating allegations that Russia meddled in the US presidential election in 2016, and investigating possible collusion between Russia and the Trump campaign.
Russia has denied allegations that it interfered in the election, and Mr Trump and the White House have repeatedly said there was no collusion.