Three U.S. Army soldiers are accused of sharing top secret national defense material and other sensitive military information with a Chinese national and other unidentified buyers in China, according to unsealed court records.

Two Army soldiers stationed at Joint Base Lewis-McChord in Washington and a former soldier in Oregon have been accused in separate indictments of sharing classified military information with China, according to the Justice Department.

Two active-duty U.S. soldiers stationed in Washington state and one former soldier were arrested on bribery and theft charges after being accused of selling sensitive information to China,

One of the soldiers was accused in a federal indictment of selling sensitive information to people in China. A former soldier was also arrested.

The severity of these leaks is pushing U.S. authorities to beef up their security protocols and tighten control over access to classified information within their ranks.