The two told the Judicial Magistrate Veluchamy that they were not ill-treated and were given food in jail. However police had taken their signature on some blank papers, they alleged.
They said they are lodged in isolated cells, which scared them, following which the magistrate directed that they be lodged at Vellore Prison.
Police also submitted the investigation report, containing the confessional statements of the two accused and eyewitness accounts of the incident.
Veluswamy had passed the order on a petition by CB-CID seeking 10 day custody of the two, arrested in October in connection with various cases, including the Advani pipe bomb case and murder of BJP and Hindu outfit leaders in Tamil Nadu.
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The Assistant Public Prosecutor had said the accused had confessed to have killed Murugan, a former BJP municipal councillor, on March 19 and custodial interrogation was required to investigate the matter further.
However, the duo claimed they had confessed under pressure from Police.