Nine Indonesians, including three children aged three to nine, died after a bridge in Bali collapsed yesterday evening, the National Disaster Management Agency (BNPB) said.
Another 30 people were injured.
When it became dark, search and rescue operations were suspended, the BNPB said, adding that they will resume in the morning.
The incident took place when a suspension bridge linking Nusa Lembongan and Nusa Ceningan - two small islands off the south- east coast of Bali - snapped at about 6.30pm, according to the agency.
Based on an interim report, all the victims were local residents, it said.
Nusa Lembongan and Nusa Ceningan have become popular in recent years, thanks to their largely remote beaches and rustic villages.
The bridge is known among locals and tourists as the "Yellow Bridge".
It was crowded with people performing a religious ceremony to commemorate Nyepi, the Balinese "Day of Silence", said BNPB spokesman Sutopo Purwo Nugroho.
After the bridge collapsed, residents rushed to help those who fell into the water. Some of the victims were able to swim to shore.
Dr Sutopo said rescue workers could not tell how many people had fallen into the water.