Nika and Michela Kholodenko, the young daughters of the Ukrainian pianist Vadym Kholodenko, have been found dead at their home in Benbrook, Texas. Their mother, Sofia Tsygankova, was also found at the home suffering from multiple stab wounds. Tsygankova has undergone surgery and is currently recovering in hospital. 

Benbrook Police Commander David Babcock, said: 'The children were not stabbed. The manner of death has not been determined at this time. But they were not stabbed. Until we speak to the mother, it's too early in this investigation to establish any suspects or motives at this point.'

Vadym Kholodenko was due to play a series of concerts in Fort Worth this weekend, but the venue have said that he will now be replaced by an understudy.

Kholodenko won the Van Cliburn Piano Competition in 2013 and has made a number of outstanding recordings. His account of Grieg's Piano Concerto and Saint-Saeëns' Second Piano Concerto with the Norwegian Radio Orchestra and conductor Miguel Harth-Bedoya was a Gramophone Editor's Choice in September last year. 

UPDATE: The police have released a statement saying that the 911 call was made by Vadym Kholodenko, who discovered the bodies. He is not considered a suspect, and no suspect is being sought. (Friday, March 18, 15.30 GMT) 

In a later statement, Kholodenko thanked those who had offered him support since the tragedy. ‘Being in a great grief I would like to address this message to everyone who thinks about my family. The loss of my children will be with me forever. But I would like to say that I feel the support of the Fort Worth community and all people who are sending me messages all over the world.’