JAKARTA (AFP) — At least seven international flights from Indonesia's resort island Bali have been canceled, an airport official said Friday, after a volcano in the archipelago nation's east erupted, shooting dark ash eight kilometers into the sky.

Mount Lewotobi Laki-Laki, a 1,703-meter twin-peaked volcano on the tourist island of Flores, erupted for 11 minutes and nine seconds late Thursday, authorities said, raising the volcano's alert status to the highest level.

As of 9:45 a.m. Friday, "seven international flights had been canceled, six of them are Jetstar flights bound to Australia and one Air Asia flight to Kuala Lumpur," Bali's Ngurah Rai International Airport spokesperson, Andadina Dyah, said in a statement.

Several other flights —both domestic and international, including to Thailand, Singapore and Australia — have been delayed, it said.

The local airport in Maumere, on Flores, the closest to the volcano, has not been affected by the ash, according to the transportation ministry.

"The ash column was observed grey to black with thick intensity," Indonesia's volcanology agency said in a statement about the eruption, which began at around 11:00 p.m. on Thursday.

There were no reports of damages to nearby villages, but the agency warned residents of the potential for volcanic mudflow due to heavy rainfall.

The long eruption prompted the country's geological agency to raise the volcano's alert level to the highest of the four-tiered system.

Authorities imposed an exclusion zone between seven and eight kilometers around the volcano, the agency added.