Indonesian authorities say rescuers have recovered 27 bodies after a passenger ferry capsized in the waters off Borneo Island.

Officials said Tuesday that 73 people have been rescued from the vessel, which sank Monday near Borneo's South Kalimantan province. More than 100 people were aboard, at least five of whom have been listed as missing.

Officials believe that the accident was caused by overcrowding and bad weather.

With over 17,000 islands, the Indonesian archipelago is heavily dependent on sea travel, but the sector has been marred by several fatal accidents over the years due to poor safety standards.