Hours after a series of outages that left X unavailable to thousands of users, Elon Musk is claiming that the social media platform is being targeted in a “massive cyberattack."

Elon Musk's social media platform X, formerly known as Twitter, experienced massive outages throughout Monday morning that impacted thousands of users in the US and UK. The outage came as platform monitor Downdetector said it had seen tens of thousands of reports from US users of technical issues affecting the platform.

X, the social media app with more than 600 million users, suffered periodic malfunctions worldwide Monday. Service had restored to most users after 1 p.m. EDT, according to Downdetector.com, a website that tracks interruptions in service for sites.