Subiya's brother Hasnain Warekar, 35, had killed 14 members of his family, including his parents, wife, sisters and children, by slitting their throats with a knife after offering them drinks laced with sedatives at the family's house in Kasarvadawali area on outskirts of Thane, and then committed suicide by hanging himself.
In a chilling testimony, Subiya, 22, told a team of investigators from Thane police at the hospital that "she saw her brother holding a blood-stained butcher's knife in his hand and approaching her shouting that he has killed everyone in the family and it was her turn now".
Subiya, in her statement, chronicled the events of Sunday and narrated how the family members had gathered and enjoyed the 'dawat' (feast) arranged by her brother and had retired to bed when Hasnain went on a killing spree.
She said at around 3 AM, she heard some sound and in the dim light, saw her brother slit throats of family members one by one, before turning towards her.
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"I learnt my brother committed suicide later on," she told the police.
Meanwhile, a close relative of the family, Liyakat Dhole, told PTI that the Warekars were a highly respected family among the 42 villages of Kokani Muslims in Thane.
"One thing I can say, is that it was Allah's wish that she stays alive to tell everyone the story...That's why the shaitan (devil) let her go," he said.
Police had also learnt from neighbours that Hasnain used to slaughter goats for 'kurbani' (sacrifice) ritual and therefore knew how to use a butcher's knife that was used in the crime.
Hasnain, a commerce graduate, used to prepare Income Tax-related documents with a CA firm in Navi Mumbai and did not have any permanent job, according to police.