HONG KONG — About 145,000 people on the Indonesian island of Bali have left their homes around Mount Agung, a volcano that is showing signs it could erupt, officials said on Friday.

The 9,944-foot volcano, the highest mountain on Bali, last erupted in the early 1960s, destroying villages and killing about 1,700 in mudflows and clouds of hot gases, lava fragments and ash.

The authorities have warned people as far as 12 kilometers, or 7.5 miles, from the volcano to leave the area and to seek shelter elsewhere.