Russian authorities say there is little chance of finding any more survivors from a tourist boat that sank Sunday in the Volga River, leaving more than 100 people missing.

At least one person was killed while nearly 80 others were rescued or were able to swim to shore.

Survivors say the boat was a very old ship that started listing to the side within moments of setting sail. They say it sank within minutes with no warning.

The boat went down in the Volga River about 750 kilometers east of Moscow in the republic of Tatarstan. The Volga is Europe's largest river and a popular tourist destination.