Three mobile phones and a charger were seized by the Cuddalore Central Prison staff during a surprise raid conducted in two blocks on the premises on Tuesday.
Following complaints that inmates were using mobile phones, a team searched the room of Sankar of Melakuppam in the convict yard and recovered a mobile phone and charger from him. .
The team searched the rooms of life convicts Pethaperumal and Gurunathan of Tirunelveli and seized two mobile phones.
The jail staff lodged a complaint with the Cuddalore New Town police.
A case has been registered against them under the provisions of the Prisons Act.