The Northern line was shut throughout the morning after a person was found dead on the tracks.
Police were called to Belsize Park station today (July 11) to reports of a casualty on the tracks.
A spokesperson for the British Transport Police said: "Paramedics also attended however sadly a person was pronounced dead at the scene.
"The incident is not being treated as suspicious and a file will be prepared for the coroner."
Initially there was no service between Golders Green and Camden Town this morning, only restarting with severe delays a few hours later.
- READ LIVE COVERAGE: No service on Northern line after 'casualty' on track - live updates
But service on the line was suspended again due to a separate incident in Golders Green.
Officers were called to the station at 9.15am to reports of a dog on the tracks.
A British Transport Police spokesperson said: "The dog has been retrieved from the tracks uninjured and will be taken to a local vets for a microchip scan."
If you feel affected by what has happened and wish to find support, you can contact the Samaritans on 116 123 via phone for a confidential chat or email jo@samaritans.org.
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