Prime Minister Narendra Modi today took to social media on the issue of Delhi riots. He tweeted that 'peace and harmony are central to our ethos'. I appeal to my sisters and brothers of Delhi to maintain peace and brotherhood at all times, he added. It is important that there is calm and normalcy is restored at the earliest, said the Prime Minister. This comes after Delhi riots claimed twenty lives and police was blamed to be missing from being on ground for quelling the riots. Prime Minister added that he had an extensive review on the situation prevailing in various parts of Delhi. Police and other agencies are working on the ground to ensure peace and normalcy.