Nepal's former prime minister KP Sharma Oli has been arrested over his alleged involvement in a deadly crackdown on protests last year.
More than 70 people were killed, many of them protesters shot by police, during an uprising in September - which was sparked by a social media ban but fueled by simmering anger over corruption and poor economic conditions.
Ex-home minister Ramesh Lekhak was also arrested on Saturday, after a panel appointed to investigate the unrest recommended the pair be prosecuted for criminal negligence.
This arrest comes a day after the nation's new prime minister, 35-year-old rapper-turned-politician Balen Shah, was sworn in following an election triggered by the crisis.
They were arrested this morning and the process will move forward according to the law, Kathmandu Valley police spokesman Om Adhikari told newswire Agence France-Presse. Oli, 74, and Lekhak, 62, have not been charged.
Oli has previously rejected the findings of the commission, which also recommended the arrest of former police chief Chandra Kuber Khapung, telling the Annapurna Post they were character assassination and hate politics.
His lawyers told Reuters his detention was unwarranted at this point in the investigation. It is illegal and improper because there is no risk of him fleeing or avoiding questioning, he said.
On Instagram, new Home Minister Sudan Gurung, who was a key figure in the protests, welcomed the arrests. No one is above the law... This is not revenge against anyone, just the beginning of justice, he wrote.
At least 19 people - including a teenager in school uniform - were killed during the so-called Gen-Z protests on 8 September, when youth took to the streets over a government shutdown of social media sites.
This turmoil came amid frustration over high unemployment, a stagnant economy, and corruption and nepotism in politics, leading to broader rallies across the nation where numerous lives were lost and public properties destroyed.
Families of 76 victims have been demanding accountability from officials in the months following the crackdown.
Oli resigned on 9 September but re-contested the election held on 5 March. Shah's Rastriya Swatantra Party (RSP) won a landslide victory, marking the first time in decades that a single party has achieved a majority in Nepal.
