Police on Tuesday recovered a suitcase from Mithi river in BKC area here containing a limb and an arm of Benet Rebello, whose chopped body parts were also found in a bag in Mahim on December 2.
According to the police, Rebello, 62, was allegedly killed by his adopted daughter, who was in a relationship which did not have Rebello's approval.
Police had earlier said that the girl and her boyfriend have been taken into custody.
The victim was a musician by profession.
A case under several sections of the Indian Penal Code (IPC) has been registered against the accused.