JAKARTA (Reuters) -Mount Lewotobi Laki-laki in Indonesia's East Nusa Tenggara province erupted on Tuesday, spewing a towering ash cloud 11 kilometres (6.8 miles) high, the country's volcanology agency said.

The backlog of flights delayed or cancelled because of the eruption is expected to take some time to clear despite some airlines resuming services.

LEMBATA, Indonesia (AP) — Mount Lewotobi Laki Laki volcano in south-central Indonesia erupted on Tuesday, spewing towering columns of hot ash into the air. Authorities raised the eruption alert to the highest level and expanded the danger zone to about 5 miles from the crater.