• ‘I don’t think anyone can say if it is possible by next July’
  
• Japanese media estimate cost of posptonement at $2-6bn
  

The chief executive of the Tokyo Games cannot guarantee the postponed Olympics will be staged next year even with a 12-month delay.

Japan’s prime minister, Shinzo Abe, issued an emergency declaration this week to battle coronavirus, putting the country under restrictions after it had seemed it would avoid the spread. Japan, which has the world’s oldest population, has reported about 5,000 cases and 100 deaths.

Related: British sports bodies fear financial ruin because of coronavirus pandemic