MOSCOW, RUSSIA – A Russian-born U.S. citizen, Robert Woodland, was sentenced to nearly 13 years in a Moscow prison on Thursday for drug-trafficking related charges, according to court officials.

Woodland, born in Russia in 1991 and adopted by American parents at the age of two, returned to Russia at 26 to meet his birth mother. Russian media outlet Interfax reported that Woodland also holds Russian citizenship.

Detained since January, Woodland faced charges of attempted illegal drug trafficking connected to an organized group, according to Russian government media. The U.S. State Department stated at the time of his arrest that it “has no greater priority than the safety and security of U.S. citizens overseas” but has issued no further comment since.

Woodland’s lawyer, Stanislav Kshevitsky, announced plans to appeal the ruling, citing unproven guilt and Woodland’s unspecified mental health issues as grounds for appeal. If no appeal is filed, Woodland will serve 12.5 years in a maximum-security penal colony.

Reports by Reuters indicate that at least a dozen Americans are currently detained in Russian prisons.