A 16-year-old boy has been arrested in west London on suspicion of assault following the stabbing of a 20-year-old man at the Notting Hill carnival, police have said. Three men aged 20 and a 21-year-old have already been arrested and are in custody at various police stations in London in connection with the incident, which happened towards the end of the two-day event. <img alt="" src="/imagedata/2011/aug/stab.jpg" border="5" /> The 16-year-old boy was captured on camera stabbing the victimu00a0and getting away The victim whose condition is described as serious but stable was found with stab wounds to the stomach and hand in Ladbroke Grove on Monday and taken to a central London hospital. The stabbing was one of only a small number of isolated incidents to mar Europe's biggest street festival amid an unprecedented security operation following the riots in London and other cities earlier this month. More than 6,500 police officers, a record number, patrolled the carnival streets on Monday, up from 5,500 on Sunday. A total of 245 people were arrested during the carnival weekend, up slightly from 243 last year. Police had targeted potential troublemakers, making more than 40 pre-emptive arrests last week. Boris Johnson, Mayor of London said during a visit to the carnival that it was right to allow the festivities to go ahead despite worries about street violence following the riots. "I thought it was very important that we should go ahead," he said. "Obviously there were quite a few people who wrote to me saying 'for heaven's sake, scrap it'. But we said 'no, that would be wrong, because that would be an admission of defeat, if you like, after what happened earlier in the month'." The London Ambulance treated a total of 494 carnivalgoers over the weekend, with 59 requiring hospital treatment. 245 Number of people arrested during the biggest European street festival 6,500 Number of cops present on the streets during the festival

A 16-year-old boy has been arrested in west London on suspicion of assault following the stabbing of a 20-year-old man at the Notting Hill carnival, police have said

16-yr-old boy arrested over carnival stabbing

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16-yr-old boy arrested over carnival stabbing

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