Photos appearing to show suspicious objects containing liquid spread on social media from inside Ginza Station. Tokyo Metro explained that the objects were water-filled bags installed on 21 September, with a total of 6 placed near Exits A12 and C8. They remained in place for about three weeks before being removed on 12 October in the presence of police.
A post on social media reported that plastic bags containing liquid had been left beside a staircase inside Ginza Station, and the post attracted widespread attention. It included descriptions of the station interior and the difficulty of reporting the items.
Tokyo Metro's public relations department explained that the suspicious objects were water-filled bags installed as an emergency measure to prepare for heavy rain from Typhoon No. 25 on 21 September. They were placed near Ginza Station Exit A12 and Exit C8, with a total of 6 installed late that night.
It was reported that the suspicious objects had been left unattended since at least 22 September and that the water-filled bags were removed on 12 October, more than 20 days later. Tokyo Metro declined to comment on the reason for their removal, whether notice had been provided, or the number of inquiries received.
Many social media posts and reports drew comparisons with the Tokyo subway sarin attack, with some explicitly linking the items to the 1995 incident. No views were given on future measures or the disclosure of information.