Flights at Catania Airport have been suspended until 4pm as Mount Etna sends a 4km-high ash cloud into the sky, with a red aviation alert in force. Flights are being diverted elsewhere or grounded. Key points and original sources are listed below.

• Flights at Catania Airport have been suspended until 4pm as Mount Etna sends a 4km-high ash cloud into the sky, with a red aviation alert in force.S1

• Flights are being diverted elsewhere or grounded.S2