Concerns about airborne ash following Friday's eruption of Indonesia's Mount Merapi have prompted many international airlines to cancel flights to and from the capital city of Jakarta.
Residents at the foot of Merapi fled their homes Monday after authorities warned the volcano could erupt again at any moment.
The volcano has been shooting clouds of hot gas and debris up to 3,000 feet into the sky.
"My parents have been calling ... saying 'You have to get out of there! You have to come home!"' said Linda Ervana, a 21-year-old history student who was waiting with friends at a train station.
Meanwhile, U.S. officials said President Barack Obama, who is scheduled to visit the country as part of his 10-day Asian tour, is still scheduled to arrive on Tuesday.
"We fully expect the president to arrive on schedule tomorrow," Paul Belmontsaid, spokesman for the U.S. Embassy in Jakarta, said.
"I realize that there was some speculation, especially over the weekend after," he continued. "I believe Friday night there was an especially large eruption and some flights were canceled at the international airport. But, as I understand it, that most flights have been resumed."
So far, the National Disaster Management Agency has raised the death toll from 138 to around 141.