Kalpetta (Kerala): Congress president Rahul Gandhi filed his nomination on Thursday from Wayanad constituency.Gandhi, accompanied by his sister Priyanka Gandhi and senior Congress leaders, K.C. Venugopal and Mukul Wasnik, submitted the papers before the district Collector A.R. Ajayakumar at the district headquarters.Heavy security was in place in and around the collectorate ahead of the high profile visit of the Congress chief.Also Read: As Rahul Gandhi Chooses Wayanad, is the South Still a Safe Haven for Congress?Gandhi, Priyanka and the other leaders, reached by a special helicopter that landed in a nearby school ground.Braving the scorching heat, thousands of party workers including women and youth gathered, waving party flags and raising slogans.Gandhi would also lead a roadshow after completing the nomination procedure.