The 48-metre vessel was sailing from Sulawesi to nearby Selayar island when it ran into strong winds and high waves
At least a dozen people, including two children, died on Tuesday after a ferry ran aground off the coast of Indonesia, officials said, as rescuers raced to save more than 125 other passengers thought to be aboard the vessel.
The deadly incident comes the same day authorities officially called off the search for more than 160 people still missing after another ferry sank on a popular tourist lake in Sumatra two weeks ago.
Images from the latest accident showed passengers clinging to the side of the KM Lestari as it listed in waters off Sulawesi island, while other passengers floated in the sea awaiting help.
The ferry ran aground about 985 feet from the coast, Indonesia's transportation agency said, as waves swamped trucks and other vehicles on the boat's deck before they plunged into the water.
"12 people have died and we're still rescuing victims," Syamsibar, the head of South Sulawesi's search and rescue agency - who like many Indonesians uses just one name - told AFP.
Authorities have not yet accounted for all 139 people listed in the ship's manifest, local police spokesman Dicky Sondani told Kompas TV.
Indonesia’s disaster agency is searching the area with the help of fishing boats, but bad weather was preventing larger vessels from getting near the location, the transportation ministry said.
It added that passengers had been wearing life jackets.
The 48-metre vessel was sailing from Sulawesi to nearby Selayar island when it ran into strong winds and high waves.
Deadly maritime accidents are not uncommon in Indonesia, where many people depend on boats to get around the 17,000 island archipelago nation despite lax safety standards.