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Met Police officers have had bottles and bricks thrown at them in a confrontation with more than four hundred people at a party in north London.
Officers came under "sustained attack" in Stamford Hill on Saturday 8 August 2015 after they were called out to deal with the late night revellers.
Hundreds of party-goers turned on the police, hurling bricks and bottles off the balcony of a block of flats at the officers below and blocking their police cars in with bins.
Riot police, dog units and a helicopter were drafted in to deal the riot, which erupted at around 11.40pm.
Fights erupted among the mob and officers later discovered a knife in a search of the area.
Detective Chief Inspector Cath Edginton, from Hackney police, branded the riot "wholly unacceptable" and said "fortunately" no officer was injured, although one member of the public was treated by paramedics for breathing problems.
It took police around two-and-a-half hours to disperse the group after trouble flared.
Scotland Yard said: "When officers arrived, they were confronted by more than 400 people, many of whom were wearing face masks.
"Shortly after the officers arrived, they came under a sustained attack with bottles, bricks and other items thrown at them from balconies. A number of bins were also pushed towards police vehicles."
DCI Edginton said: "A number of residents had contacted police to complain about the noise levels at the party and it was for this reason that officers attended.
"To be confronted by hundreds of people and attacked in this way is wholly unacceptable. It is fortunate that none of my officers were injured.
"I would also like to take this opportunity to appeal to anyone who witnessed the events or has information about the people responsible to contact the police."
No arrests were made during the disorder but police are trying to identify and track down those involved.
Anyone with information is asked to call police on 101 or Crimestoppers anonymously on 0800 555 111.
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