Kolkata/Mumbai:In a breakthrough, the CID on Thursday arrested two persons, both Bangladeshi nationals, one from West Bengal and the other from Mumbai, in connection with the gangrape of a 71-year-old nun at a convent school in Nadia district that caused a nation-wide outrage.

The incident had taken place at Ranaghat in West Bengal 12 days ago. The first arrest was made in Mumbai when Sikander Sheikh alias Salim was picked up in the early hours from Nagpada area in south Mumbai, while Gopal Sarkar was taken into custody from Habra in North 24 Parganas district in West Bengal, IG, CID (Operations) Dilip Adak said. He added that Salim, who was arrested from Nagpada area in south Mumbai by the West Bengal police in coordination with their Mumbai counterpart, confessed during interrogation that he had been involved in the crime. "We will get more details after further interrogation," he said.