At least 18 people have died and dozens are missing after a tourist boat carrying more than 50 capsized Saturday in Vietnam's Ha Long Bay, state media said.
The vessel was carrying 48 passengers and five crew members when it capsized because of sudden heavy rain as it toured the UNESCO World Heritage site, the Dan Tri news site said.

"Border guards rescued 12 people and recovered 18 bodies," said a report on the VNExpress news site.

Most of those on board were families visiting from the capital Hanoi, with more than 20 children among the passengers, VNExpress said.