Amazon.com Inc (AMZN.O) said its online stores had returned to normal services after a global outage disrupted shopping on its country sites.

According to outage monitoring website Downdetector, services were disrupted for nearly two hours and at the peak of the disruption, more than 38,000 user reports indicated issues with Amazon’s online stores. They occurred on Sunday evening in the United States and Monday morning for much of the rest of the world.

“Some customers may have temporarily experienced issues while shopping. We have resolved the issue, and everything is now running smoothly,” an Amazon spokesperson said.

The spokesperson declined to comment on the reason for the outage.

More than 6,200 user reports had indicated issues with Amazon’s online store site, as of 0148 GMT, while about 1,700 users reported problems with Prime Video and more than 400 with Alexa, according to Downdetector.

Outage reports dropped significantly to double digits on the platforms in a little over an hour, Downdetector showed.

Downdetector tracks outages by collating status reports from a series of sources, including user-submitted errors on its platform.