Hundreds of Indonesian rescuers resumed efforts on Monday to find 129 people missing after a passenger ship capsized in the Java Sea over the weekend, officials said.

The operation includes personnel from the coast guard and navy, who raced to board the capsized vessel as the search continued. The confirmed death toll stood at six, according to the supplied France 24 report.

The source provided no further details about the cause of the accident, the vessel’s route or the condition of any survivors.