Several airlines have cancelled flights between Australia and Indonesia’s Bali after a nearby volcano spewed ash up to 10km (6 miles) into the sky.

Jetstar and Virgin Australia said on Wednesday that all flights to and from the Indonesian resort island’s capital Denpasar had been cancelled due to the eruption of Mount Lewotobi Laki Laki.

“Due to volcanic ash caused by the Mount Lewotobi eruption in Indonesia, it is currently not safe to operate flights to and from Bali,” Jetstar said in a statement.

Qantas said a number of flights had been “disrupted” and affected customers would be “notified directly and provided with their options”.

Flight tracking website Flightradar24 also showed that AirAsia flights to the island had been cancelled.

Australia is the biggest source of tourism for Bali, with its citizens making up about one-quarter of the 625,665 people who visited the island in July.

Mount Lewotobi, located about 500km (311 miles) east of Bali on the island of Flores, has erupted repeatedly since November 3, when plumes of hot ash and lava killed at least nine people.

At least 31 people have been injured and more than 11,000 evacuated due to the volcanic activity, according to Indonesian authorities.

Indonesia’s Center for Volcanology and Geological Disaster Mitigation said eruptions on Friday spewed the tallest column of ash yet, with plumes stretching 10km (6 miles) into the sky.

Indonesia is susceptible to volcanic eruptions and earthquakes due to its location in the Pacific “Ring of Fire”, a horseshoe-shaped zone that traces the meeting points of numerous tectonic plates.