New Delhi, Oct 28 (UNI) Former Finance Minister P Chidambaram was taken to the All India Institute of Medical Sciences on Monday for a medical check-up after complaining of stomach ache, sources confirmed. The former Finance Minister was arrested by the Central Bureau of Investigation in August, and had been in judicial custody in Tihar jail before being handed over to the Enforcement Directorate (ED). Chidambaram is in the ED’s custody till Wednesday, in connection with the INX Media case. Earlier, he was in Tihar jail under judicial custody and was shifted to the ED’s custody later.