Swaraj suffered a cardiac arrest. She was administered CPR but did not respond, according to the All India Institute of Medical Sciences.
As the news of her death trickled in late on Tuesday night, many prominent BJP leaders and Union Ministers rushed to Swaraj's residence to pay their condolence.
Several of Bollywood stars took to Twitter to give the late minister emotional and heartfelt tributes.
From filmmaker Anurag Kashyap, top actors Parineeti Chopra, Anushka Sharma, Ayushmann Khurrana and others- Bollywood stars gave rich tributes to one of the country's most loved ministers.
I hail from Ambala Cantt, same as Sushma Swaraj ji. Always felt proud that a woman from our small town made it big, and made a difference. Sushma ji rest in peace. You inspired me on a personal level. #RIPSushmaSwarajJi
Shocked to hear the sudden demise of @SushmaSwaraj ji. She was a gracious lady & astute parliamentarian. Did a excellent job as the External Affairs Minister. My heartfelt condolences to her family members. #OmShanti 🙏 pic.twitter.com/m5k8Hed6v3
Deeply saddened...#SushmaSwaraj ji is and will always be remembered as one of the most respected and beloved leaders of our country. Her speeches in parliament, her empathy, her spirit, her kindness... what a remarkable and amazing human being. #RIPSushmaSwarajJipic.twitter.com/kADsCOq6j8
An Iron Lady who was not only a true patriot but an incredible inspiration for each and every one of us. An epitome of women empowerment and leadership.#SushmaSwaraj ji you will be missed and remembered forever. My deepest condolences and prayers to the family 🙏#RIPSushmaJipic.twitter.com/OLrXJMuf0X
Waking up to an extremely sad news..I am shocked and saddened. #SushmaSwaraj ji was an someone who not only went out of her way to help people in her capacity as an official,but more so as a lovely human she was..with her gone so soon,India has lost a beautiful soul #RIPSushmaJi
RIP Sushma ji. Absolutely shocked and devastated to hear about her passing. She was always close to me and was extremely kind, since the early days. My heartfelt condolences to the family & our entire nation for this great loss.
RIP #SushmaSwaraj ji.. one great leader who proved that you could could be hold the top position in a Ministry and still be hands on in solving issues of the common man real time.Your dedication to attending to all the Appeals meet you on social media is exemplary and legendary.