Trump says AI safety fears a 'hoax' as he rejects calls for greater safeguards

US President Donald Trump has said fears about the safety of AI are a "hoax", as he criticised calls to have more guardrails for the fast-moving technology.

It comes after Jack Clark, a co-founder of AI giant Anthropic, told the BBC that a "kill switch" for dangerous AI that can be checked by a third party may need to be mandatory for the industry.

Clark's comments followed warnings about the risks the technology poses to humanity that have been raised in recent days by several executives and staff at leading AI firms.

Those concerns triggered a selloff in shares of some tech firms on Monday as investors weighed the impact of a potential slowdown in the development of AI.