"I have no clue about the incident... I know nothing about it... I have been framed," Mallick said before he was taken inside CID headquarters Bhawani Bhawan here for questioning.
Mallick along with six other accused were brought to the CID headquarters in connection with the lynching of the ITI student on suspicion of being a cattle lifter.
Mallick, TMC Upa-Panchayat Pradhan, was arrested from near Duttapukur in neighbouring North 24 Parganas district on Thursday night and remanded to 13 days' police custody. Nine others were also been named in the FIR by the youth's family.
"We are trying to reconstruct what exactly happened on May 9. We have to get the entire picture of the incident," a senior officer of the CID told PTI on condition of anonymity.
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Meanwhile, the victim's family feared "partiality" by the CID and demanded CBI probe.
"We are still not sure whether we will get justice or not... There are accused persons who are still roaming. We cannot rely on the CID. We want CBI to probe into the case," victim's father Kartik Purkait said.
The incident triggered public outrage in the area with a mob vandalising houses of the accused when the youth's body was taken to the house of his aunt in a procession on Wednesday.