A possible cyberattack has disrupted access to the website of the western Japanese city of Hiroshima, which is currently hosting the Group of Seven summit.
City officials say they noticed the problem at around 4:45 p.m. on Saturday, and that it was resolved by 7 p.m.
But they say access remains limited.
The officials report that the disruption was caused by a distributed denial of service, or DDoS, attack. The aim of such an attack is to overwhelm a targeted server with huge volumes of data.
Police say they are trying to determine whether the issue is the result of a cyberattack. They add that the disruption has not affected the summit.
The three-day summit began on Friday. Ukrainian President Volodymyr Zelenskyy is scheduled to attend on Sunday.