kylie, have officials there at the state department said anything about her death? >> well, state department official confirmed the death of catherine serou and this awful tragedy, which, quite frankly, still has a lot of questions surrounding it. i asked the state department if they believe the russian investigation to be credible. they didn't respond to that. but they did say that they are closely monitoring this russian investigation. now, a local court told cnn over the weekend that they had identified and arrested a suspect who is suspected of murdering catherine. catherine was a 34-year-old american. she was in school at a local university east of moscow. the last time that she was in touch with anyone, according to russian investigators, was when she reached out to her mother to tell her mother that she was in a car with an unidentified person, was worried about being abducted. and then russian investigators say that she was stabbed at least twice. now the state department also