Kathmandu: Nepal Prime Minister K P Sharma Oli successfully underwent his second kidney transplant surgery at a hospital here on Wednesday.

The 68-year-old prime minister's condition was stable and kept under medical supervision at a post-operative ward in the Tribhuvan University Teaching Hospital (TUTH) here, his Press Advisor Surya Thapa said.

"Oli underwent a renal transplant today. The surgery has been successful," said Dr Arun Sayami from TUTH.

Oli, who is also the chairman of the ruling Nepal Communist Party, was hospitalised on Monday.