Thirty-nine people have been arrested on suspicion of attempted murder after a man was chased and stabbed in west London in the early hours of New Year's Eve.
The Metropolitan Police said the victim, who was in his 30s, was chased by a group of men and women after a "minor argument" broke out in a shop in Hammersmith on Fulham Palace Road.
Officers arrested 39 people at a property near the scene after they failed to cooperate with police. They were taken into custody at several police stations.
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Superintendent Mark Lawrence said the number of arrests made was "unusual", but was a result of "a lack of co-operation".
"What appears to have been a minor argument has resulted in a man sustaining life-threatening injuries," he said.
"Whilst it is unusual for so many people to be arrested in the early stages of an investigation such as this, due to a lack of co-operation and the necessity of securing essential evidence following a serious assault, this action was appropriate."
On Monday morning, a pool of blood could be seen on the pavement outside a branch of Sainsbury's around the corner in Fulham Palace Road.