Japanese health authorities have reported the first two deaths linked to the Covid-19 outbreak on board a Princess Cruises ship under quarantine in Japan.

The two victims, a Japanese man and woman, were described as being in their eighties. The man is said to have had a pre-existing respiratory condition.

The deaths were revealed as Japan comes under increasing criticism for the way in which it handled the quarantining of passengers on the 115,900-gt Diamond Princess (built 2004).