So far, police have arrested mother of the victims, one Jaffar, an auto driver and a factory owner. Jaffar's 16-year-old son has already been taken into custody.
"Investigations done in this case so far revealed that the family had stayed near Budwel railway station here around 5 years back. From there they shifted to Katedan about 2 years back. All through this, the victims' mother was maintaining intimacy with different adults," police said.
According to police, despite the girls refusing to go there, their mother insisted them to sleep in the supervisor's room only.
While staying in Budwel earlier, both the girls were "badly misbehaved" with by three other persons, when they had just started pre-schooling.
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Police are trying to identify the trio.
According to police, one Pradeep Aggarwal, a factory owner, who was maintaining a close relationship with the mother, had "molested" the girls.
Police, who have already arrested Jaffar and took his 16-year-old son into custody yesterday, stated that the father-son duo had continuously (sexually) assaulted the twin girls over last 15 to 20 days.
"Not only this, Jaffar also got one more auto driver named Shafi who also (sexually) assaulted the kids. All this was happening with the active connivance of the victims' mother," police said, adding that both Shafi and the woman were arrested yesterday.
"Further, the elder brother (of the sisters) and one of his friends also started exploiting them very recently as he seems to have witnessed some of the happenings in the house," police said.
Following the complaint, a case was registered on charges of rape and trafficking of persons under relevant sections of IPC and other provisions of Prevention of Children from Sexual Offences Act, police had said.
The NGO had said that the victims hailed from Nepal but have settled in Hyderabad.
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