This is despite the efforts of both officers and paramedics who arrived at the scene.
A crime scene has been put in place around the area, and footage posted to twitter by bystanders appears to show multiple police cars and vans parked around the area.
Twitter user 999London said: “A large number of police officers are currently guarding the crime scene.”
Police have not confirmed the identity of the victim or the shooter.
Police have set up a crime scene around the area
Enquiries into the incident are ongoing.
No arrests have been made.
Express.co.uk has contacted the Metropolitan Police Service for more information.
One person said on Twitter: “We heard what we thought were gun shots then a woman screaming like mad earlier.”
Police say a man in his mid-20s has been killed
Three young people were shot in Haringey on July 23. All three were taken to hospital.
According to the most recent police report also on July 23, one of the victims, a 19-year-old man, was in a critical condition.
The other victims were two 15-year-old boys. One suffered possible life-changing injuries, and the other sustained injuries that were not thought to be life-changing or life-threatening.
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Police at the crime scene
No arrests have been reported in connection with the Haringey shooting, which took place at Rochford Car Park, Willan Road, N17.
Regarding the Haringey incident, North Area Commander Detective Chief Superintendent Treena Fleming said: “I fully understand how frightening this will be for the local community and how devastating for family and friends; my thoughts are with them all.
“My officers are, at this moment, doing all they can to reassure local people and arrest those who were responsible.
“Specialist officers from the Serious Crime Command are investigating and I know they will relentlessly pursue those who carried out this crime.
“There will be extra officers in the area, both to investigate and to give a visible presence, it is important that local people know they have our full support.”
According to Metropolitan Police figures, there were 1,950 gun crimes in London in 2019/20.
This was down from 2,380 in 2018/19, and down further from 3,070 in 2010/11.