Investigators blamed a drunk captain for the boat crash that killed 11 people aboard a river cruiser in the city of Volgograd, Russia.
A pleasure craft with 16 people onboard collided with a tugboat Monday on Volga River, about 250 metres from the riverbank.
Russia's Investigative Committee cited preliminary results from the forensic examination and said the boat's captain and owner of the vessel, had been drunk and likely to blame for the accident.
The boat, which had not been registered, was overloaded and there were only 6 life jackets onboard, all of which stayed unused, the committee revealed in a statement.
According to the website of regional governor Andrei Bocharov, 5 people were rescued, and 3 of the survivors were in hospital.
Volgograd (named Stalingrad between 1925-1961), will host World Cup opening round matches that involve Tunisia, Nigeria, England, Iceland, Egypt, Saudi Arabia, Poland and Japan.
The first is the June 18 game between Tunisia and England.