The Tokyo Metro Ginza Line suspended service across its entire route after smoke was reported at Asakusa Station early on April 22, but resumed full operations around 7:20 p.m. after about 13 hours. The smoke stemmed from damage to a cable in station equipment. Service between Asakusa and Mitsukoshimae stations took the longest to restore.
Smoke was detected at Asakusa Station around 6:20 a.m. on April 22, prompting Tokyo Metro to suspend the entire Ginza Line, according to The Yomiuri Shimbun. At 6:35 a.m., service resumed between Mitsukoshimae and Shibuya stations, though the stretch from Asakusa to Mitsukoshimae remained halted for much longer.
The central control center identified the cause as damage to a cable within the station's facilities. Full service across the line restarted around 7:20 p.m., approximately 13 hours after the initial suspension.
The disruption occurred during the morning rush hour, likely affecting commuters in Tokyo. Tokyo Metro expedited inspections to restore operations.