A number of websites, including social media platform X, appear to have been hit by problems affecting internet infrastructure firm, Cloudflare.
Thousands of users reported issues with X and other services to outage monitoring site Downdetector shortly after 11:30 GMT on Tuesday.
"Cloudflare is aware of, and investigating an issue which potentially impacts multiple customers," the company said in a note on its service status dashboard at 11:48 UTC.
"Further detail will be provided as more information becomes available."
Cloudflare is a huge provider of internet security across the world, carrying out services such as checking visitor connections to sites are coming from humans rather than bots.
