The two airports in Catania, at the base of the volcano, were reopened but civil aviation authority ENAC said it was still monitoring Etna's increased activity and ash emissions.

Volcanology institute INGV said Etna's regular seismic activity had increased on Wednesday prior to the latest eruption, which has been minor so far.

Etna, Europe's tallest and most active volcano, erupts regularly but usually causes little damage to inhabited areas.

Etna is Europe's most active volcano. Its last major eruption was in 1992.