IOC president Thomas Bach condemns ' despicable ' attacks on Volgograd . Has written to Russian president Vladimir Putin to send condolences . Our thoughts are with the loved ones of the victims , '' Bach said . Over 30 were killed in two attacks on public transport system . The Games organizers remain ' confident ' about safety of athletes and spectators .
IOC president Thomas Bach condemns ' despicable ' attacks on Volgograd . Has written to Russian president Vladimir Putin to send condolences . Over 30 were killed in two attacks on public transport system . The Games organizers remain ' confident ' about safety of athletes and spectators .