The U.S. Department of Justice has concluded its investigation into former Vice President Mike Pence without bringing any charges in connection with the discovery of secret documents at his residence in Indiana, according to a department official.

The official also stated that Pence was informed by letter from the department.

Representatives for Pence, who served under former Republican President Donald Trump, did not immediately respond to a request for comment.

After revelations of classified material found at Trump’s Florida residence after he left office, the National Archives called on former presidents and vice presidents to make checks for any material that should be in the government’s possession.

A lawyer for Pence had notified authorities about the discovery of records with classified markings, prompting an FBI search for records at his Indianapolis residence this year.

NBC and CNN reported the closing of the probe earlier Friday.

Pence’s spokesman has said the former vice president has “fully cooperated” with the probe and Pence himself has publicly acknowledged what he called a mistake.

A Justice Department special counsel, Jack Smith, is investigating Trump’s handling of classified materials since leaving office in January 2021.

A separate special counsel was appointed to conduct an investigation after U.S. President Joe Biden reported finding some classified material in his possession.

Both Biden and Trump are seeking the presidency in the 2024 election. Pence is expected to announce his candidacy next week.