A teenager was arrested on suspicion of murder and robbery becoming the 11th person to be arrested in connection with a fatal stabbing on Bank Holiday Monday.
The 18-year-old attended a north London police station on Thursday June 3.
He was interviewed in connection with the death of an 18-year-old, who has now been named by police as Azadeeq Mohamed.
Mr Mohamed was found suffering from a stab injury in the tennis courts area of Montrose Park in Burnt Oak shortly before 6pm on May 31.
He was treated by London's Air Ambulance and London Ambulance Service at the scene. Despite their best efforts, he was pronounced dead at 7.19pm.
A post-mortem examination held on Thursday at Northwick Park Hospital found his cause of death to be a stab wound to the chest.
On the evening Mr Mohamed died, seven people were taken into police custody on suspicion of offences including affray and attempted murder.
The following day, the Met confirmed the arrest total was up to 10, with the 18-year-old arrested on Thursday becoming the 11th person to be arrested in connection with this stabbing.
A Met spokesperson confirmed this morning (Sunday) that no one has yet been charged with Mr Mohamed's murder.
At least nine of the people arrested have been released on bail while an 18-year-old has been charged with robbery.
Earlier this week, deputy leader of Barnet Council, Cllr David Longstaff, described the incident in Montrose Park as a "senseless and brutal attack".
He added: "I join the people of Barnet in expressing my deepest condolences to the family and friends of the young man who tragically lost his life in Montrose Playing Fields on Bank Holiday Monday.
"I thank the police for swiftly making a number of arrests. Barnet Council will continue to work with the police and community groups to keep our parks and streets as safe as possible for everyone to enjoy."
Police say Montrose Park would have been extremely busy on Bank Holiday Monday and any witnesses are urged to come forward.
Detective Chief Inspector Claire Hine, who is leading the investigation, said: "I'm really thankful for the witnesses who have already come forward and helped with our investigation.
"I'm now appealing for more people to come forward who saw the incident happen and the moment the victim was attacked. Any piece of information, videos, images could assist us in understanding as to what led to this violent incident where a young man has lost his life.
"The park was busy at the time with a lot of people enjoying the sunny day. If you have any information, please contact us immediately."
Any witnesses or those with information, video or images that could assist police are asked to call 101 reference CAD 5436/31May.
Or contact Crimestoppers anonymously on 0800 555 111 or visit https://crimestoppers-uk.org
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