CBI has started questioning gangster Chhota Rajan in Tihar prison in the murder trial of J Dey. The 56-year-old crime and investigations editor of mid-day was shot dead by motorcycle-borne shooters in June 2011, allegedly at the behest of Rajan.

The sources said the agency team yesterday reached Tihar Jail where Rajan is lodged after being deported from Indonesia and started questioning him after completing necessary formalities.