Authorities in Indonesia were trying to find a missing submarine on Wednesday.
The KRI submarine Nanggala-402 stopped responding Wednesday morning, local media reported, citing defense officials.
Indonesian National Armed Forces Commander Marshal Hadi Tjahjanto told Kompas national paper that the submarine had disappeared in waters about 60 miles (95 kilometers) north of the island of Bali around 3am local time.
“Just when the diving license was issued, once the clearance was obtained, contact was lost immediately,” he told the paper.
It is one of five Indonesian owned submarines and was built in Germany in 1979.
Indonesia has sought the assistance of Australia and Singapore in finding the submarine.
The Reuters news agency reported that 53 people were on board the ship and were involved in torpedo drills when it went missing.