The 31-year-old man was arrested at around 13:30hrs on Monday, 1 January, at an address in Dalston.
He was arrested on suspicion of the murder of Iuliana Tudos
The man has been taken to a south-west London police station where he remains in custody.
A murder investigation, led by DCI Nicola Wall, was launched after Iuliana’s body was found by a member of the public at 16:25hrs on Wednesday, 27 December.
The body of the 22-year-old, who was also known as...