Two more teenagers will appear in court charged with murdering 18-year-old Dale Robertson, who was stabbed to death after youths clashed at a birthday party.
The two 17-year-olds were arrested following the death of Mr Robertson when trouble flared at a girl's 16th birthday party in Sheffield last Saturday night.
It is thought a large number of youths had attended the party on Rokeby Drive, Parson Cross, in the city, when violence broke out.
Mr Robertson, of Primrose Drive, Ecclesfield, Sheffield, was stabbed in the chest and died from his injuries in hospital.
South Yorkshire Police said the two youths, who are both from Sheffield, will appear before magistrates in the city.
On Thursday, a 16-year-old boy appeared at Sheffield Youth Court accused of Mr Robertson's murder and was remanded in custody.
Another 17-year-old arrested in connection with the death was being held in police custody.
