SHANGHAI, May 21. /ITAR-TASS/. President Putin has called for conducting a thorough investigation into the Odessa tragedy and punish all those responsible. ''A thorough investigation should be conducted, the criminals responsible must be found and punished," Putin said.

"It is precisely the result that all of us should achieve. Otherwise, there might be a recurrence of the nightmare and horror which we have seen in Odessa," Putin warned.