News of the arrest was eclipsed by the discovery of 24 ancient human skulls discovered in two mailed packages, announced at the same press conference.
The 32-year-old faces charges of drug trafficking under the country’s strict drug laws.
The man's mother tells Newsweek about her shock when her son knocked on her door in the middle of the night.
Christian Beasley shaved his head but was identified nonetheless.
Authorities believe the prisoner managed to cut through steel bars above the ceiling.
A huge ash cloud forced the closure of Bali's Ngurah Rai International Airport on Monday for 24 hours.
Indonesia's Disaster Mitigation Agency set up an exclusion zone and ordered people to "immediately evacuate."
But authorities say they can't predict exactly when the blast will happen.
The U.S. is advising against any visits to the volcano, warning that an eruption could disrupt flights.
The four men had been jailed on drug and fraud charges.
Ash can be pulled into jet engines, affecting the internal operations of the engine and fuel flow.