TikTok CEO Kevin Mayer said on Wednesday that he has quit the company amid US pressure as tensions soar between Washington and Beijing over the Chinese-owned video-sharing app.

In a letter, Mayers said: "It is with a heavy heart that I wanted to let you all know that I have decided to leave the company."

"In recent weeks, as the political environment has sharply changed, I have done significant reflection on what the corporate structural changes will require, and what it means for the global role I signed up for," Mayer added in the letter.

Mayer's decision comes as US President Donald Trump sought to ban the Chinese app over national security concerns.

As per the reports, US General Manager Vanessa Pappas will replace him on an interim basis.

It was only six months ago that Mayer had joined the TikTok company.