Facebook’s social networking site, Instagram and messaging app WhatsApp were inaccessible to some users on Sunday, downdetector.com showed.

Downdetector.com indicated that there were more than 12,000 incidents of people reporting issues with Facebook at its peak, but that figure dropped to about 2,000 reports. The outage monitoring website also showed that, at the peak on Sunday, there were more than 3,000 incidents of people reporting issues with WhatsApp and 7,000 with Instagram. The website's ive outage map showed that the issues were mainly in Europe and Asia.

The social media networks were back up and running in New York by 9.30.a.m, but irate users turned to Twitter to vent during the blackout.

"Earlier today, some people may have experienced trouble connecting to the family of apps. The issue has since been resolved; we’re sorry for any inconvenience,” Facebook said.

Facebook experienced one of its longest outages in March, when some users around the globe faced trouble accessing Facebook, Instagram and WhatsApp for more than 24 hours.