An Aussie man is in custody in America after an alleged violent confrontation with a Transportation Security Administration officer at Los Angeles International Airport.

Melbourne man Thomas Jesse Bingham, 35, has pleaded not guilty to a federal charge in the US after prosecutors alleged he violently confronted the LAX officer on March 15.

Bingham allegedly assaulted the officer as he was preparing to board a flight.

Bingham entered his plea late last week in the US Federal Court in Los Angeles after being charged with assault on a federal officer resulting in bodily injury.

According to the US Department of Justice, Bingham mistakenly believed a TSA officer had taken his backpack and passport.

It is alleged that Bingham approached the uniformed officer while he was in a bathroom and then followed him out.

This is where the confrontation escalated.

Prosecutors allege Bingham grabbed the officer’s uniform, ripped off his identification lanyard, pulled his hair, and shoved him into a glass wall during the altercation.

Melbourne man Thomas Jesse Bingham, 35, has pleaded not guilty to a federal charge in the US after prosecutors say he violently confronted the LAX officer on March 15

According to the US Department of Justice, Bingham was convinced a TSA officer had taken his backpack and passport

The officer reported pain in his hand and back and sought medical evaluation.

Airport police initially arrested Bingham, and officials later located his missing carry-on bag and passport at a restaurant in Terminal 7 that he had visited earlier.

Bingham was released from custody but was taken into custody again at LAX as he attempted to board a flight to the United Kingdom.

Bingham, who could spend up to eight years in jail if convicted, has a tentative trial on May 12.