The ruling was issued by the Far Eastern District Military Court in Yakutia.
"[Russian] citizen Mirvokhidov Mirsokhidzhon, born in 1991,… was sentenced to 20 years in high-security prison," the press service said.
It added that the man was involved in terrorist activity in Syria and was trained at the Jabhat al-Nusra camp.
READ MORE: Al-Nusra Unwilling to Withdraw From Idlib — Reports
The terrorist was detained as he tried to enter Russia with forged documents.
*A terrorist organization, banned in Russia and a number of other countries.