The Congress president Rahul Gandhi was all set to travel to Patna today during the elections time in the country. But due to some problems in the engine of his flight he had to return to Delhi. This will lead to the dealy in his meetings in Samastipur (Bihar), Balasore (Orissa) & Sangamner (Maharashtra). The party chief has apologized for the delay in his arrival and meetings. DGCA has ordered probe in the incident.