The federal grand jury looking into the handling of documents at Mar-a-Lago recently heard testimony from Kash Patel, a top adviser to former President Donald Trump who has been deeply involved in disputes over classified records Trump kept from his presidency, according to sources familiar with the situation, CNN reported.

Patel appeared before a grand jury at the US courthouse in Washington, DC, for a good portion of the morning of October 13. But it’s unclear whether Patel responded to the grand jury’s inquiries or chose not to, in which case he was free to do so and could have used his Fifth Amendment rights.

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According to court documents and the sources, he is one of a small group of Donald Trump’s aides who may face legal repercussions relating to the Mar-a-Lago problem after the presidency. It is unknown, however, whether he is a target of the Justice Department investigation.

Who is Kash Patel?

Kashyap Pramod “Kash” Patel, an American lawyer, children’s book author, and former government official was born on February 25, 1980, in Garden City, New York, to Gujarati Indian parents who arrived in the country in 1980 via Canada on a flight from East Africa. He completed high school in Garden City.

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In 2002, Patel received his degree from the University of Richmond. He graduated from Pace University School of Law with a Juris Doctor in 2005 after earning a certificate in international law from University College London in 2004.

Under President Donald Trump, he served as the acting secretary of defense’s chief of staff. News outlets have frequently referred to Patel as a “Trump loyalist.” Patel was a crucial part of the Republican effort to thwart the inquiries into Donald Trump and Russian meddling in the 2016 election as Devin Nunes’s assistant.

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Patel previously served as a federal public defender, a federal prosecutor who focused on national security issues, and a legal liaison to the US Armed Forces. He has also worked in the US National Security Council and the US House of Representatives. He is a Republican.