Kathmandu, Sept. 10 -- The Nepalese Army has taken control of security and imposed a nationwide curfew after violent protests toppled the KP Sharma Oli government, leaving at least 19 people dead and sparking widespread destruction.

Army Chief General Ashok Raj Sigdel, in a televised address, appealed to protesters to halt demonstrations and come forward for dialogue, stressing the need to protect public safety, property, and national heritage. He also expressed condolences over the lives lost since violence erupted on September 8.

Security forces have secured key installations, including Kathmandu airport and the government's main secretariat, Singhdurbar. Borders have been sealed, with only essential service vehicles such as ambulance...