1.   A fourth Russian climber, Vladimir Tumyalis, was ill and did not attempt the summit, Drakin said.

2.   Authorities had not yet identified the nationality of the fourth climber.

3.   Mountain rescuers were searching for a fourth climber.

4.   The search continued for the fourth climber.

5.   A fourth Austrian climber was still missing after search operations were suspended Wednesday due to bad weather.

6.   Rescuers say the fourth climber probably perished.