A Russian military court has sentenced four men from Tajikistan and 11 accomplices to life in prison for a deadly attack on a Moscow concert hall in March 2024, according to state news agency TASS.
Some 149 people were killed in the shooting and fire at Crocus City Hall on 22 March 2024.
Prosecutors charged 19 people in connection with the attack.
The four other defendants were given sentences ranging from 19 to 22 years in prison, the RIA state news agency reported.
Some of the accomplices are Russian citizens.
The attack - the deadliest in Russia in two decades - was claimed by the Afghan branch of so-called Islamic State.
Families of some of the victims were in court as the sentences were handed down.
The trial was held behind closed doors, as is customary with such cases in Russia.
The attackers opened fire after entering the concert hall shortly before a concert by Soviet-era rock band Picnic.
They then set fire to the building, trapping many victims.
More than 600 people were wounded. Six children were among those killed.
The incident came two years into Russia's invasion of Ukraine with Moscow - bogged down by the offensive - dismissing US warnings of an imminent attack.
Russia's Investigative Committee said after the verdict that it was "reliably established" the assault was "planned and committed in the interests of" Ukraine.
It accused the men of also plotting attacks in Dagestan.
