Some more tests and procedures are scheduled for tomorrow and the day after as well, according to the Permanent Mission of Nepal to the United Nations.

Prime Minister Koirala is in the US since June 16 fore medical treatment after a suspicious black spot was seen in one of his lungs in a CT-scan test conducted in Kathmandu.

Also on Friday, the prime minister had undergone a number of medical test s at the Memorial Sloan Kettering Cancer Center.

The examinations included CECT (chest) and PET scan and CT-guided FNAC (lungs). Anesthesia was administered while taking a biopsy sample.

Koirala is accompanied by his personal physician Dr Karbirnath Joshi, relatives Mridula Koirala and Atul Koirala, and security official Colonel Prakash Deuja.

He was operated in the tongue for cancer eight years ago.

Recently, doctors in Nepal had found white patches in his lungs. He had left for New York on June 15 for treatment of a suspicious black spot in one of his lungs.