The prison staff seized ganja and sedative tablets from a few remand prisoners lodged in the Central Prison.
According to the police, four suspects — including Karthik alias Dori Karthik — were arrested by the Anna Nagar police on Wednesday in connection with the murder of history-sheeter Kumerasan in front of a college in Arumbakkam on Monday.
They were produced before a court and interned at the Central Prison in Puzhal on Thursday.
Sedative tablets too
They were found to be possessing 10 g of ganja and 46 sedative tablets.