Jakarta: Two people have been crushed to death and more than 100,000 evacuated on the Indonesian island of Java after a volcanic eruption blanketed rooftops with rocks and ash, causing homes to cave in.

The man and woman in their 60s were killed in two separate homes in the sub-district of Malang on Java, where Mount Kelud spectacularly erupted on Thursday night.

‘‘The homes were poorly built and seemed to have collapsed easily under the weight,’’ National Disaster Mitigation Agency spokesman Sutopo Purwo Nugoro said on Friday. ‘‘Over 100,000 people have been evacuated.’’

He said the eruptions had ceased, but the ash had spread as far as 500 kilometres to the west and north-west, causing more problems, especially for airlines.