Alphabet-owned YouTube was down for hundreds of thousands of users in the United States and worldwide, according to outage monitoring website Downdetector.

Hundreds of thousands of users had reported issues with YouTube, the site said.

Downdetector tracks outages by collecting status reports from multiple sources, including user submissions.

An ongoing issue with YouTube has since received more than 800,000 user reports, according to the monitoring platform, which also indicated related problems affecting other Google services.

Downdetector noted that its figures are based on user-reported data, meaning the actual number of people affected may differ.

Google did not immediately respond to requests for comment.