Ayodeji Azeez was stabbed to death in Samos Road, Anerley on Sunday, 4 November.
A 17-year-old boy was charged on Tuesday and the girl, 16, was charged yesterday.
Two men have previously been charged with Ayodeji’s murder.
Chase Grey, 23, from South Norwood, will next appear in custody at the Old Bailey on Thursday, 31 January 2019.
Kevin Lusala, 21, from Orpington, is due at the same court on Wednesday, 6 February.
Two men, aged 19 and 21, who were both previously arrested have been released under investigation.Tags: Dagenham
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