KUALA LUMPUR, Aug 14 — The rumour that the Mount Sinabung volcanic eruptions in northern Sumatra, Indonesia would affect the air quality in Malaysia until this weekend is untrue.

JAKARTA, Aug 10 — An Indonesian volcano spewed a giant ash cloud 5 km (3.1 miles) into the sky on Monday in its second eruption in three days, emitting a thunderous noise and turning the sky dark, authorities and witnesses said.