Nepal's former chief justice Sushila Karki has been chosen as the country's interim leader, said an official from Nepal president's office, after violent anti-corruption protests forced Prime Minister KP Sharma Oli to resign this week.

Karki, 73, the only woman to have held the post of chief justice of the Supreme Court of Nepal, will take the oath later on Friday, Archana Khadka Adhikari, information officer at the president's office, said.

At least 51 people died and more than 1,300 were injured in the violence on Monday and Tuesday.

The military took back control of the streets on Wednesday, enforcing a curfew, as army chief General Ashok Raj Sigdel and President Ram Chandra Paudel held talks with key figures and representatives from "Gen Z", the loose umbrella title of the youth protest movement.

Nimesh Shrestha, who was part of the Gen Z protest, told AFP that the demonstrators backed the former judge.

"We have an agreement... The parliament will be dissolved. Sushila Karki will be the prime minister." (Reuters/AFP)