South African was arrested during questioning under Nepal's strict public order laws for swearing at tourism officials
A record of 373 foreign climbers have been cleared to scale for the gigantic mountains
The missing climbers were part of a team of four, one of whom -- Subhash Pal -- died after falling ill on Sunday
Nepal is hoping the April-May season will see climbers return to the world's highest peak
The findings, published earlier this month, also sound alarm bells for Nepal's push to develop hydropower projects.