HANOI, Vietnam (AP) — Two Indian tourists were in critical condition after a speedboat capsized off southern Vietnam, killing 15 people, officials said Sunday.

The speedboat was carrying 32 Indian tourists and four Vietnamese crew members when it overturned less than half a kilometer (0.30 mile) from shore Saturday afternoon, shortly after leaving Hon May Rut Ngoai island near Phu Quoc, Vietnam’s largest island, authorities said.