Twenty-one people, including 14 foreign tourists, were rescued in Vietnam on Tuesday after a blaze gutted their boat in Halong Bay, according to media reports.
The early morning blaze quickly engulfed the vessel as it returned to port following a two-day leisure trip at the UNESCO World Heritage Site, the VN Express website reported.
All onboard were rescued by a nearby boat.
Quang Ninh province's deputy government chairman Vu Van Dien, who arrived at the scene shortly after the incident, called for an immediate inspection of all tourist boats at Halong Bay, reported the Tuoi Tre newspaper.
Accidents are a regular problem at the busy UNESCO site, which features towering limestone peaks just off the northern Vietnamese coast.
A fire in May last year forced 36 tourists, who were all eventually rescued, to jump overboard to escape the flames. A similar incident occurred in February 2015, which resulted in the rescue of 16 tourists.
In 2011, the sinking of a wooden junk during an overnight cruise killed 11 foreign tourists and their Vietnamese guide.