Elon Musk says "there was (still is) a massive cyberattack against X."

Elon Musk says X (formerly Twitter) has been hit by a "massive cyber-attack" on Monday, after thousands of users in the UK and US reported outages.

Mr Musk, who has owned the platform since late 2022, suggested the attack may be ongoing.

"We get attacked every day, but this was done with a lot of resources," he wrote in a post on X.

He suggested that "either a large, coordinated group and/or a country is involved".