A raid was conducted following complaints about extortion calls being made by inmates, SSP K B Singh said.
The district authorities led by DM Nikhil Chand Chaturvedi seized 22 mobile phones, 30 SIM cards, 500 gram charas and a knife from the jail primises, Singh said.
Police are checking the recovered SIM cards which were allegedly used for making extortion calls.
A case has been registered against unknown person regarding this matter, they added.