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"Some mobile phones, SIM cards, iPods, a Pakistan flag and other incriminating material were recovered," an official said.
The Srinagar jail had attracted the attention of the security agencies after LeT militant Naveed Jatt alias Abu Hunzullah, who was taken for medical check up from the jail on February 6, escaped with the help of associates inside the jail.
Two policemen were killed by the militants at Srinagar's S M H S Hospital when the militant was freed.
All high-risk militants lodged in Srinagar Central Jail have since been shifted to prisons outside the Kashmir Valley.