According to the New York Times, this is the first known time Mueller has asked for documents directly related to Trump's businesses.
Two people briefed on the matter said the scope of the subpoena is not clear, nor was the reason Mueller chose to issue a subpeona instead of simply asking for the documents, according to the report.
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Both the White House and a lawyer representing the Trump Organization refused to comment, the report said.
The Special Counsel under the direction of former FBI Director Robert Mueller is looking into an alleged collusion between Trump's campaign and Moscow, which appears to be corroborated by the unverified dossier. Donald Trump and his key assistants repeatedly rejected allegations of any unlawful contacts with Russian officials during the election campaign.
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The intelligence committees both in US Senate and the US House of Representatives were leading a similar investigation. On Monday, Texas Republican Michael Conaway, chair of the US House Intelligence Committee, announced that Republicans have reached a consensus that there was no collusion between Trump and Russian nationals or the Russian government. Nevertheless, Mueller's investigation remains ongoing.