BANDUNG ~ Ten young people were trampled or crushed to death as hundreds of music fans tried to force their way out of a rock concert in the West Java city of Bandung, police and hospital officials said.

Witnesses said that people inside the packed venue were trying to escape the crush just as hundreds of others were surging their way inside.

“Ten people were killed; one of them has not yet been identified. Six other people were injured,” Bandung Police chief Bambang Suparsono said.

He said the dead were mostly teenagers and that an investigation was underway into the incident, which happened late on Saturday.

Police said the capacity of the building was for 700 people but that only around 400 attended the concert by a popular heavy metal group called Besides.

Local media reports said, however, that there were more than 1,500 people inside the building.

“We have questioned 51 witnesses and three suspects,” Suparsono said.