New Delhi, Jan 27 (ANI): US President Barack Obama on Tuesday departed from Palam airport in New Delhi concluding his three day India visit. Obama will now be going to Riyadh in Saudi Arabia, to pay respects to the late King Abdullah before returning to Washington. He took to twitter to express his feelings about the visit- "Thank you Narendra Modi for a memorable visit, and to the Indian people for their warm welcome", he tweeted. Obama and First Lady Michelle Obama joined hands in 'namaste' to the people of India before getting in the Air Force One aircraft of the United States. Prime Minister Narendra Modi and Barack Obama held a number of meetings in order to expand business and invite investments to both the countries.