The Bolshoi Theatre's principal ballet dancer has been interviewed as a witness over an acid attack on the troupe's artistic director.
Moscow police said they had spoken to Nikolai Tsiskaridze over the assault on Sergei Filin, who had sulphuric acid flung in his face by an assailant near his home in the city last week.
Officers also questioned employees at the theatre, as well as friends and relations of Mr Filin.
"I was questioned as a witness, although a witness to what I don't understand," Mr Tsiskaridze told a radio station.
The dancer admits that he and Mr Filin (42) had differences of opinion over the theatre's artistic direction but he denies any involvement with the assault and has condemned it as "a terrible crime which must be harshly punished".
The Bolshoi's general director, Anatoly Iksanov, denied suggestions that the management had hinted at Mr Tsiskaridze's involvement.
Mr Tsiskaridze (39) irked the management after the theatre reopened in 2011 following a six-year refurbishment. The dancer said the sumptuous restoration made the then 186-year-old Bolshoi look like "a hotel in Turkey".
Mr Filin has had a series of operations on his face and eyes since the attack. (© Daily Telegraph, London)