Russian police have arrested three men, including a star dancer, over the acid attack on the artistic director of the Bolshoi ballet.
Sergei Filin was left with severe burns to his eyes and face when an unidentified attacker threw a jar of sulphuric acid in his face as he was returning home late on January 17.
The 42-year-old former dancer is now undergoing treatment in Germany.
The interior ministry said Bolshoi soloist Pavel Dmitrichenko was among those arrested.
The two others are the suspected attacker and the man accused of driving him to and from the scene.
It was not clear what role the dancer is suspected of playing in the attack.