A 25-year-old man was arrested on suspicion of conspiracy to murder in the earlier hours of Wednesday, 16 June at a residential address in Kent. He has been taken to a police station where he remain in custody.
Sasha was shot on Consort Road in Southwark in the early hours of Sunday, 23 May. She remains in a critical condition in hospital.
Four men currently remain on bail until a date in late June.
Two men have been charged in connection with the investigation.