The wife of Pakistan's jailed formerprime ministerSharif was under treatment at London's Harley Street Clinicsince 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 ladyof Pakistan was diagnosed with lymphoma (throat) cancer in August last year.
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