Security forces gather Saturday to prepare for the inauguration. (Jonathan Newton/The Washington Post)

A Virginia man was arrested after law enforcement found at least one firearm and ammunition in his truck as he tried to enter an inauguration security checkpoint near the Capitol on Friday evening with a credential that was not authorized, according to court documents.

Wesley Allen Beeler, 31, of Front Royal drove his Ford F-150 up to a checkpoint on E Street, northeast of the Capitol, where he was met by Capitol Police officers, according to the court documents. The area is one of many under complete lockdown following the Jan. 6 breach of the Capitol and ahead of the Jan. 20 inauguration.