Tonga's Ministry of Tourism has temporarily suspended the whale watching operator's licence of Whale Swim, Fish and Dive Tours.
This photograph taken on August 4, 2008 shows a humpback whale diving near the island of Vava'u in Tonga. Photo: DAVID BROOKS / AFP
MatangiTonga Online reported the suspension followed a diver being lost at sea last week.
43-year-old German tourist Marina Trost went missing while diving off 'Eua on Sunday, 11 August as part of an expedition organised by the whale watching operator.
A spokesperson for the ministry said the business's licence would be suspended until the outcome of the police investigation is known.