External Affairs Minister Sushma Swaraj Tuesday condoled the death of Pakistani's former prime minister Nawaz Sharif's wife. Begum Kulsoom Nawaz died Tuesday in London after a prolonged illness, Sharif's brother and Pakistan Muslim League-Nawaz president Shehbaz Sharif said. The wife of Pakistan's jailed former\u00a0prime minister\u00a0Sharif was under treatment at London's Harley Street Clinic\u00a0since June 2014. "I am sorry to know about the sad demise of Mrs Kulsoom Nawaz. My heartfelt condolences to the bereaved family. May her soul rest in peace," Swaraj tweeted. The 68-year-old former first lady\u00a0of Pakistan was diagnosed with lymphoma (throat) cancer in August last year.