CHARLOTTE, N.C. -- New charges have been filed on William Hilton Paul, the grandson of former presidential candidate Ron Paul, and son of U.S. Senator Rand Paul.

William Paul, 19, was arrested last Saturday at Charlotte-Douglas International Airport after his flight from Lexington, KY landed in Charlotte.

Paul, a Bowling Green, KY resident, was charged with consuming beer/wine underage, disorderly conduct and being intoxicated and disruptive.

According to the Mecklenburg County Sheriff's Office, Paul is facing a new charge: assault on a female by aggressive physical force, a misdemeanor.

The circumstances around the new charge have not yet been revealed. It's not clear if the new charge is related to his arrest last week.

Charlotte-Mecklenburg Police say Paul was possible served alcohol on the flight, but U.S. Airways explicitly denies serving alcohol to the teen.

When contacted following the arrest last week, Senator Rand Paul's office released the following statement:

Sen. Paul is a national public figure and subject to scrutiny in the public arena. However, as many parents with teenagers would understand, his family should be afforded the privacy and respect they deserve in a situation such as this.

Stay with and NBCCharlotte for the latest developments.

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