The separate incidents took place on August 3rd at Morden Park.
The stabbings took place on the first day of the weekender, which ran from August 3rd through the 4th, at Morden Park in southwest London. Sutton & Croydon Guardian reports that a 24-year-old man was stabbed around 4 PM on Saturday; a 27-year-old man was attacked close to 6:45 PM; the third man, also in his 20s, was stabbed at 9:38 PM; and the fourth victim, a man in his 40s, was stabbed before 10 PM. All victims were taken to the hospital, and the first three reportedly "did not suffer life-threatening or life-changing injuries." The condition of the fourth man is still unknown. These all appear to be separate incidents at this time.
Merton Police issued a section 60, "which allows a police officer to stop and search without suspicion," in the wake of the attacks. The local police also confirmed to Mixmag that the attacks occurred inside the festival.
The Eastern Electrics team issued this statement to Resident Advisor.
We can confirm that four serious assaults took place at Eastern Electrics on Saturday, August 3rd. All casualties were transferred to hospital after being treated on site by our medical team.
The police are appealing for witnesses to come forward and asking anyone with information that may help with their investigation to call 101.
The safety of everyone on site is our first priority, and we will continue to work closely with the police, local authorities and our security staff to ensure a safe and secure environment at Eastern Electrics.
The 2019 lineup featured the likes of Orbital, Claptone, Kenny Dope, Hannah Wants, Special Request, PBR Streetgang and more.
This post has been updated to reflect new information.