Tourism managers in Nha Trang said on Wednesday they still had not found a Russian tourist who went missing while scuba diving on Monday.
Rua Lan Dai Duong (Ocean Diving Turtle), which organized the diving tour in question, said Daniil Repjev, 27, had jumped off the boat of his own will after the diving trip finished, and he didn't resurface, local news website Vnexpress reported Wednesday.
Repjev and a German, and an Israeli had asked the company to take the diving tour for free as diving coach trainees.
The tour around Mun Islet was organized for eleven tourists.
The company has reported the incident to authorities and Repjev's family in Russia. The firm is still searching for the missing diver.