A 16-year-old boy has been arrested after a woman was stabbed in Seven Kings, Ilford, east London.
Officers found a 27-year-old woman suffering stab injuries to her back.
She was taken to hospital, and her injuries are not thought to be life threatening.
A male aged 16 has now been arrested on suspicion of attempted murder, and remains in custody at an east London police station.
It comes after images were released as part of the police investigation into the assault.
Detectives from the Met’s East Area CID are appealing for any witnesses or anyone with information to contact them.
Anyone with information that could assist police is asked to call 101 or tweet @MetCC quoting reference CAD 7258/08Jul.
Alternatively, you can provide information to the independent charity Crimestoppers anonymously on 0800 555 111.