The BJP on Saturday alleged that Congress president Sonia Gandhi was the "driving force" behind the "conspiracy" to implicate then Gujarat chief minister Narendra Modi in the 2002 riots case in the state. In a press conference, party spokesperson Sambit Patra claimed that the late Ahmed Patel, who was Mrs Gandhi's political adviser and a leading Congress leader, was just the medium through which she acted to destabilise the BJP government in the state and damage Prime Minister Modi's political career.