Inspector General of Police (Special Branch) J S Gangwar sent to West Bengal by Chief Minister Nitish Kumar in the wake of the incident has submitted the report to the state government on Tuesday.
Principal Secretary Home Amir Subhani told PTI today that the government has received the report. However, he as well as IG Special Branch refused to divulge the details.
The family, hailing from Samastipur in Bihar, left Madhyamgram but was tracked down by the gang and the girl was allegedly set on fire on December 23 when she was alone.
The family also apprehended their future safety and security but refused to return to their native place in Bihar, the sources said.
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Gangwar said he met the father, mother and other relatives of the girl and handed over a cheque of Rs one lakh provided by the Chief Minister Nitish Kumar which worked as a "healing touch".
The West Bengal government had slammed the Bihar government for sending the team and described it as "interference".
Regretting West Bengal Urban Development Minister Firhad Hakim's charge of interference by the Bihar government, Nitish Kumar had on Monday said he was merely responding to people's 'sentiments' by deputing a senior police official to visit West Bengal and provide financial assistance to the family.
The victim girl's father met President Pranab Mukherjee yesterday seeking justice.