External Affairs Minister Sushma Swaraj was admitted to Delhi’s All India Institute Of Medical Science on Wednesday because of kidney failure. “Presently, I am on dialysis. I am undergoing tests for a kidney transplant,” she said on Twitter. Doctors told IANS that the transplant procedure may take a while as the search for a donor was still on.

The news agency quoted an official, who said, “Since a donor from her immediate family is not available right now, the kidney transplant might take some more time.” The Bharatiya Janata Party leader has reportedly been unwell of late and was at AIIMS earlier this month, as well.

Swaraj had also been admitted to the hospital in April after she had complained of chest congestion and fever. The 64-year-old had undergone treatment for pneumonia.

The minister’s post about her health received tweets wishing her a speedy recovery and one even offered to donate a kidney for her treatment. One well-wisher tweeted, “My blood group is B positive. I will be happy to donate my kidney to you, if needed.”