Former Union Minister Jaswant Singh passed away at an Army hospital on Sunday following a cardiac arrest. He was 82-years-old. A close aide to former Prime Minister Atal Bihari Vajpayee, Singh had been admitted to the Army Research and Referral Hospital here in 2014 after a fall in his home. Also Read:Former union minister Jaswant Singh dies at 82, PM Modi expresses condolences He was admitted on June 25 this year and was being treated forSepsis with Multiorgan Dysfunction Syndrome. A number of Bharatiya Janata party (BJP) and opposition leaders, along with other admirers, expressed their condolences on the passing of the former Union Minister. Here are a few: Senior Congress leader Digvijay Singh called the former Army officer a stalwart of many battles inside and outside the Parliament. Very sorry to hear about the sad demise of Jaswant Singh ji a stalwart of many battles inside and outside the Parliament. We have lost a Patriot and a thorough Gentleman. Our condolences to the Family, Digvijay Singh tweeted. West Bengal Chief Minister Mamata Banerjee paid tribute by saying, Saddened at the passing away of former Defence Minister and one of India's longest-serving parliamentarians, Jaswant Singh Ji. My condolences to his family and his many admirers. Meanwhile, activist-lawyer Prashant Bhushan took a took a potshot at the current BJP leaders, saying that Jaswant Singh's kind has been replaced by vaccuous, brash, abusive, egotistic, fawning, bullies & bhakts. RIP Jaswant Singh ji, you were among the last of the Vajpayee generation gentlemanly leaders. Unfortunately your kind has been replaced in the BJP by vaccuous, brash, abusive, egotistic, fawning, bullies & bhakts. No resemblance at all to Vajpayee's BJP, Bhushan tweeted. A founding member of the BJP, Singh served as India’s foreign, defence and finance ministers. He also served in the Indian Army in the 1950s and 1960s.Singh fought and lost the 2014 Lok Sabha election as an independent candidate after the BJP did not give him a ticket. He was born on January 3, 1938 in village Jasol in Rajasthan's Barmar district. His funeral will take place in Rajasthan's Jodhpur later today, PTI reported family sources as saying.