The Tokyo Metropolitan Government has started work to improve water quality at a venue of this year's Olympic and Paralympic Games after higher-than-acceptable levels of E. coli bacteria were detected there last year.
Odaiba Marine Park is the intended venue for the swimming leg of the triathlon for the Tokyo Games.
Organizers of the 2020 Tokyo Olympics say hydrogen fuel will be used for parts of the torch relay in an effort to promote clean energy and raise awareness of environmental issues.
The torch relay is scheduled to start on March 26 at the J-Village soccer stadium in Fukushima Prefecture. The complex was an operational base for decommissioning work at the Fukushima Daiichi nuclear power plant.
A huge monument featuring the Olympic symbol has been lit up in Tokyo six months before the Japanese capital hosts the Games.
A ceremony was held on Friday in Tokyo's Odaiba area attended by Tokyo Governor Yuriko Koike and the president of the Japanese Olympic Committee, Yasuhiro Yamashita.
Japan's Air Self-Defense Force aerobatic display team has practiced skywriting the Olympic rings to prepare for a ceremony marking the arrival of the Tokyo Games' torch.
The team practiced on Friday, six months before the start of the Olympics.
An Olympic torch relay committee of Fukushima Prefecture has approved a proposal to add a town hosting the crippled nuclear power plant to the route for the flame relay.
In a previous meeting, the committee members concluded that they will add Futaba Town to the route if the government's evacuation order on the town is lifted. The town is one of three municipalities where the order has been in place since the 2011 nuclear accident.
The uniforms that Japanese athletes will wear for the opening ceremonies and other official events of the Summer Olympics and Paralympics were unveiled at an event in Tokyo on Thursday.
Six athletes appeared in the uniforms for the opening ceremonies. The uniform comprises a white jacket and a red skirt or trousers. The colors are based on Japan's national flag.
A medical academic society is calling on officials and volunteers to get vaccinated ahead of the 2020 Tokyo Olympics and Paralympics to curb the spread of infections during the events.
The Japanese Association for Infectious Diseases is set to announce a list of infectious diseases that people need to be wary of during the Games. It is also urging people involved in the event to receive vaccinations against eight diseases. Those diseases include measles, rubella, influenza, and invasive meningococcal disease.
Japan's Air Self-Defense Force aerobatic display team began practice on Friday, to prepare for a ceremony to mark the arrival of the Olympic torch.
The torch will be lit in Olympia, Greece, on March 12 and transported to Japan by plane.
A huge Olympic symbol monument has been unveiled in Tokyo Bay, six months before the city hosts the 2020 Games.
The five-ring monument arrived at the sea at Odaiba Marine Park, one of the Olympic venues, on Friday morning. It measures 33 meters long and 15 meters high and will remain on a barge until the end of the Games.
The organizing committee for the 2020 Tokyo Olympic and Paralympic Games has released ticket designs.
All 84 designs were unveiled at an event in Tokyo on Wednesday.