Belongings left behind or lost in the stations or trains will be kept at Shimbashi or Toyosu Stations until the following day. After that, the items will be transferred to the local police via the Lost and Found Center.

Inquiries (in Japanese only):
Lost and Found Center tel. 03-3569-0391 (8:00 – 20:00)
Shimbashi Station tel. 03-3574-0821
Toyosu Station tel. 03-3533-5911