Neom is set to host hyper-futuristic cityscapes and structures — but financial pressures on the kingdom are changing.

DUBAI/RIYADH (Reuters) -Nadhmi al-Nasr, the long-time chief executive of the $500 billion NEOM mega-project at the heart of Saudi Arabia's drive to diversify away from oil, has departed, NEOM said on Tuesday without giving a reason.

Pitched as a mix of ‘Blade Runner’ and ‘Jurassic Park,’ Neom is the world’s biggest construction project. Twenty-one thousand people have died so far to make it happen.

Saudi Arabia announced Tuesday that it was replacing the chief executive of its futuristic mega-city NEOM as scepticism mounts over the Gulf kingdom's most ambitious development projects.

Longtime CEO Nadhmi al-Nasr left Neom, Saudi Arabia’s marquee development, which has been plagued by delays, cost overruns and staff turnover.

Neom CEO Nadhmi Al-Nasr has exited the company amid allegations that workers have died and gone missing while working on the Saudi Vision 2030 project.

Following the departure of Nadhmi al-Nasr who had served as the project’s chief executive since 2018, Aiman al-Mudaifer has been appointed as interim CEO, says NEOM in a statement.

Neom, Saudi Arabia's ambitious megacity project, is a key part of the kingdom's Vision 2030 scheme. Its CEO stepped down after six years in the role.

Saudi Arabia's ambitious futuristic city plans have been bogged down by delays and changes. The most recent is the departure of its CEO, Nadhmi al-Nasr.

The departure of the longtime CEO marks a major shakeup at Neom, which is a showpiece of Riyadh’s economic ambitions.