New Delhi, March 6 : Prime Minister Narendra Modi on Sunday expressed deep grief over the passing away of former Prime Minister Atal Bihari Vajpayee’s long-time aide Shiv Kumar Pareek. In a tweet, the Prime Minister said, “Saddened by the passing away of Shiv Kumar Pareek Ji. Firmly rooted in our Party’s ideology, he devoted himself to service, nation building and worked closely with Atal Ji. Will cherish my interactions with him over the years. Condolences to his family. Om Shanti.” Shiv Kumar Pareek worked with former Prime Minister Atal Bihari Vajpayee. The former PM had also attended many programs held at Shiv Kumar Pareek’s house. ASU GNK