In the mission Uncle Vlad, Niko executes Vladimir Glebov and then drags his body into the water where it sinks. The body is supposedly located in the river beneath the Algonquin Bridge in Blue Hell.
In Grand Theft Auto IV, the player cannot swim underwater, but what lies under the water can be viewed in Blue Hell. Some people say that Vlad's body is right where it was left after the mission. However, because of the air break mod, players have found that this myth is false.