Roger Stone has been ordered to retain any information or exchanges he has pertaining to possible Russian interference into the 2016 election

The Senate Intelligence Committee has ordered informal adviser to President Trump Roger Stone to hang on to any records he may have for the inquiry into Russian interference into the election.

This comes as it was announced on Friday that the committee has officially scheduled the hearing for March 30.

Stone has admitted to exchanging messages with Guccifer 2.0 on Twitter. The account is believed to be connected to Russia and is suspected to have hacked the Democratic Party servers.

Also, in 2016, Stone also admitted to have spoken with Julian Assange of Wikileaks.

He tweeted Saturday night: 'I cannot wait to testify before a Senate Hearing to expose the phony Russian narrative of the Clinton Crime Family #NoCollusion.'

The New York Times obtained the letter Stone received which was dated February 17.

The letter orders him to: 'preserve and retain all hard copies and electronically stored information as specified below in furtherance of the committee’s ongoing investigation into Russian actions targeting the 2016 U.S. elections and democratic processes globally.'

Roger Stone tweeted Saturday night: 'I cannot wait to testify before a Senate Hearing to expose the phony Russian narrative of the Clinton Crime Family #NoCollusion'

Roger Stone said he would be willing to appear before the committee without a subpoena

Stone told the Times he is more than willing to participate without a subpoena.

He said: 'I am anxious to rebut allegations that I had any improper or nefarious contact with any agent of the Russian state based on facts, not misleading and salacious headlines.'

'I am willing to appear voluntarily if the committee isn’t looking for the headline of issuing a subpoena.'

Representatives on both sides of the aisle have advocated for the investigation into Russian interference in the general election.

The committee has blamed the Kremlin for the Democratic National Committee hacks. Moscow has denied these allegations.