Social media platform X was down for thousands of users in the United States and Britain on Monday, according to Downdetector.com.

There were more than 23,210 reports of issues with X as of 8:24am ET (1324 GMT), according to Downdetector, which tracks outages by collating status reports from a number of sources.

The monitor also showed a peak of 254 reports in Pakistan at 6:47pm.

X did not immediately respond to a request for comment on what caused the outage.

The actual number of affected users may differ from what’s shown on Downdetector because these reports are user-submitted.