alert/announcement in Okubo/Shinjuku area?

hi, i’m visiting tokyo rn and im staying in Okubo. from around 4:50-5:20 this morning there was a very loud alert or announcement? i’m not really sure exactly as i do not speak japanese. there were two different sirens tones with an announcement in japanese in the middle. i was wondering if anyone knows what that was for.

by jaycat190

3 comments
  1. Really? I didn’t hear anything and I live right in the heart of Okubo, I was also awake then

  2. It was a fire engine, they use the loudspeaker to direct traffic while they come through

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