The cordon in Camden (Image: André Langlois)
Two people were injured in an incident in the early hours of New Year's Day.
Police were called at 5.48am to Camden High Street.
Officers found a man with a laceration to his chest and another man with an injury to his head.
They were taken to a west London hospital and police said their conditions were not life threatening.
Two men have been arrested on suspicion of GBH and taken into custody.
A stretch of the towpath by the lock remained closed at lunchtime with a crime scene in place.
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