"Only with the permission of the court which remanded the accused can they be shifted to some other place. Since they are remand prisoners, permission of the Special Additional Sessions Court, the trial court in the case, has to be sought," Home Minister Thiruvanchoor Radhakrishnan said.
Speaking to mediapersons after visiting the district prison here where the accused have been lodged, the minister said he suspected they had used the mobile phones either due to malfunctioning of jammers or changes in frequency and added the technical faults if any would be rectified.
The minister, who was speaking after chairing a meeting with top police officials on the matter, said a high-level enquiry team has been constituted and asked to submit its report immediately.
Steps would be taken to avoid lapses in jail security and action taken once it was received, he said.
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Radhakrishnan said government had conducted raids in the district jail here soon after coming to know the accused had used mobile phones to access their Facebook accounts.
The accused in the case were found to have made Facebook postings, apparently using sophisticated mobile phones in their possession. The matter was exposed through a sting operation by a Malayalam TV channel.
Chandrasekharan, who floated his own outfit Revolutionary Marxist Party (RMP) after quitting CPI(M), was hacked to death in May 2012 near his native village Onchiyam. Many of the accused in the case are local CPI(M) workers, apart from goons hired to execute the murder.