Facebook, WhatsApp, Instagram back after 6-hour outage, Mark Zuckerberg says 'sorry for disruption'

Washington: Facebook CEO Mark Zuckerberg apologized for the disruption in the operation of Facebook, Instagram and WhatsApp and said the services are returning online.

"Facebook, Instagram, WhatsApp and Messenger are coming back online now," Zuckerberg said on Facebook.

"Sorry for the disruption today -- I know how much you rely on our services to stay connected with the people you care about," he said.

WhatsApp has fully restored the operation of its services after a major outage, CEO Will Cathcart said.

"We're entirely back up and running now," Cathcart said on Twitter. (UNI)