Four civilians, including a child, were killed as rockets rained down on the capital Tripoli and damaged its only working airport.
At least four civilians, including a five-year-old girl, were killed and 16 others wounded in the working-class districts of Abu Slim and Ben Gashir in Libya.
Dozens of rockets also targeted Mitiga airport, hitting a civilian aircraft lined up to repatriate Libyans stuck abroad due to the coronavirus pandemic, the GNA statement added.
The airport was badly damaged and came under renewed rocket fire on Sunday morning.
An airport source said the passenger halls and two civilian planes sustained serious damage.
Images of an aircraft with its fuselage ripped open and of a badly damaged runway and airport buildings were posted on social media.
Libya’s National Oil Corporation (NOC) said Saturday that rockets and missiles hit a fuel depot at the airport, destroying four tanks and damaging six others.
Since Wednesday, 17 civilians and two police officers have been killed and more than 66 other civilians wounded in rocket fire targeting several areas of the capital.
World leaders at a Berlin meeting in January committed to ending foreign meddling and to upholding a 2011 weapons embargo, but the UN has warned that both sides have continued to receive arms and fighters.