A U.S. soldier has been indicted Thursday on charges of smuggling a massive amount of marijuana into the country, South Korean prosecutors said Thursday.

The 23-year-old corporal from the U.S. Air Force base in Osan, identified only by his initial M, is accused of smuggling 944 grams of marijuana with coffee beans via international air mail in September, prosecutors said.

That quantity is enough for approximately 1,800 doses, they added.

The prosecutors said they have indicted the soldier after the U.S. military handed him over to South Korean authority under a Status-of-Forces Agreement that governs the legal status of about 28,500 U.S. servicemembers stationed in the country.

The agreement requires Korean prosecutors to indict American soldiers involved in serious criminal cases within 24 hours of their arrest. (Yonhap News)