Two boys have been charged with the murders of Mason Rist and Max Dixon in Bristol on Saturday night.
The boys, 15 and 16, remain in police custody and will appear at Bristol Youth Court on Friday, Avon and Somerset Police said.
Mason, 15, and Max, 16, died after being stabbed in Ilminster Avenue at around 11.20pm.
In addition to the murder charges, police have charged two men with two counts each of assisting an offender.
Bailey Westcott, 22, and Jamie Ogbourne, 26, both from Bristol, will appear at Bristol Magistrates’ Court on Friday.
Antony Snook, 44, who was charged with two counts of murder on Wednesday was remanded into custody ahead of a further hearing at Bristol Crown Court on Friday.
Police said eight people have been arrested in total, including a woman on suspicion of conspiracy to murder.
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A 20-year-old man was also arrested on suspicion of murder and possession of an offensive weapon in a private place. He has been bailed but no further action will be taken related to the murder offence, police had said.
Detective Superintendent Gary Haskins, head of the Major Crime Investigation Team, said: “Specialist officers are providing support to Mason’s and Max’s families.”