Ajithkumar, hailing from Komarapalayam in Namakkal District of Tamil Nadu, was arrested on October 24 in connection with a robbery case and lodged in the Salem Prison, police said.
Since he was involved in various other offences, the district administration has ordered his detention under the Goondas Act a couple of days ago, they said.
Ajithkumar was lodged in a cell in 8th block along with three other accused.
His cell mates, who had gone to watch a film screened in the auditorium being Saturday today, on returning, found Ajithkumar hanging dead from a ceiling fan using a 'lungi', police said adding further investigation was on.
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