Two daughters of Ukrainian pianist Vadym Kholodenko have been found dead in Texas, while his estranged wife sustained non-life-threatening injuries.
Police in Benbrook, a Fort Worth suburb, says Kholodenko discovered Nika, 5, and Michela, 1, in their bedrooms early on March 17.
Their mother, 31-year-old Sofya Tsygankova, is to be held for mental evaluation once she recovers from her physical injuries.
Kholodenko, 29, had an appointment to pick up the children from his estranged wife's home.
"Once he arrived there, he found the mother in an extreme state of distress and discovered the children in their state," Babcock said. "He has been cooperative in this investigation. He is not considered a suspect at this time."
Police previously said there were no signs of forced entry into the home and that the children have not been stabbed.
In 2013, Kholodenko won the gold medal in the prestigious Van Cliburn International Piano Competition.
Kholodenko and Tsygankova married in 2010, but filed for divorce in November.