IInternet connectivity in Ukraine has been affected by the Russian invasion, particularly in the south and east of the country where fighting has been heaviest, internet watchers said on Saturday.

Russian forces captured the southeastern Ukrainian town of Melitopol on Saturday, Russian news agency Interfax reported, as Moscow launched coordinated cruise missile and artillery strikes on several towns, including the capital Kiev.

Connectivity at GigaTrans, Ukraine’s main internet provider, fell below 20% of normal levels before returning to higher levels in the early hours of Friday morning, according to internet monitoring organization NetBlocks.

“We are currently seeing nationwide connectivity at 87% of ordinary levels, a figure that reflects service disruptions as well as the flight of people and the closure of homes and businesses since the morning of the 24th,” said Alp Toker, Director from NetBlocks, to Reuters.

“While there is no nationwide power outage, little is heard from the worst affected regions, and for others there is a pervasive fear that connectivity could fail. escalate at any time, cutting off friends and family,” Toker said.