The House of Representatives Intelligence Committee in the US has revealed its intention to subpoena former national security advisor Michael Flynn.
The decision is part of the investigation into whether Russia was involved in the US election, according to Reuters.
Flynn previously refused to appear before the House of Representatives Intelligence Committee to discuss the issue.
Representative Adam Schiff said: "We will be following up with subpoenas, and those subpoenas will be designed to maximise our chance of getting the information that we need."
The US Senate Intelligence Committee has also said it will subpoena two of the former security advisor's businesses, but this is related to a separate Russia investigation.
Both of the committees want Flynn to give information about Trump's links with Russia and any knowledge about any interference by Russia in the US election.
Flynn was sacked from the White House in February after failing to reveal information about his discussions with Russia's ambassador to the United States, Sergei Kislyak, and also misleading Mike Pence.