The U.S. Supreme Court declined on Tuesday to side with a foreign company that sought to block a subpoena from Special Counsel Robert Mueller's federal grand jury.

The company hasn't been named in any court documents, but it is reportedly owned by a foreign government.

The ruling could pave the way for it to be identified in court documents.

Roberts temporarily blocked the subpoena in December, forcing Mueller's team to explain why the government is investigating a foreign-backed corporate entity whose government has been trying hard to avoid cooperating.

Prosecutors filed a brief just before New Year's Eve explaining their position.

The Federal Court of Appeals for the D.C. Circuit had truled that the company was required to obey the subpoena. Roberts referred the case to the full Supreme Court, which dropped his intervention on Tuesday.

The Supreme Court dropped a temporary ruling by Chief Justice John Roberts on Tuesday, clearing the way for Special Counsel Robert Mueller to enforce a subpoena against a government-owned foreign corporation

The Supreme Court's order, issued Tuesday, puts an end to the mystery company's temporary shield from Mueller's subpoena power

The case is unusual since the unnamed country involved has gone to great lengths to fight Mueller’s demands,leading to speculation that it has something to hide in his wide-ranging Russia probe.

In its arguments before the D.C. Circuit Court, the company unsuccessfully argued that complying with the subpoena would be a violation of its home country's laws.

Its challenge to Mueller's authority was the first such motion to reach the Supreme Court.

CNN speculated that the company could be anything from a sovereign-owned bank to a state-backed technology or information corporation – the kind that Mueller has targeted with requests for information in the past.

In order to keep its identity a secret, an entire floor of a Washington courthouse was closed to reporters, and the public was ordered to leave the courtroom when arguments were heard in December.

The case is unusual since the unnamed country involved has gone to great lengths to fight Mueller’s subpoena, leading to speculation that it has something to hide in the ongoing Russia probe

The D.C. appeals court ruled that the company could face fines for every day it refused to obey. Roberts' temporary order paused those fines.

Mueller and multiple congressional committees are looking into allegations that there was collusion between Russian operatives and Trump associates during the presidential campaign and transition.

It has been reported that the company's subpoena challenge began in September.

CNN reported that prosecutors had confided in the D.C. court that they had 'reasonable probability' the records they demanded would show actions that took place in a foreign country but affected the United States.

Mueller has already indicted three Russian companies and 25 Russians for their alleged contributions to a social media propaganda scheme meant to influence American voters, and to computer hacking that targeted the Democratic National Committee.