Karachi, Nov. 5 -- A coalition of Sindhi civil-society groups and the Sindhudesh movement has raised urgent international concerns over alleged clandestine nuclear-related activity in remote mountainous areas of Pakistan's Sindh Province.

In a formal letter to the United Nations Secretary-General, the International Atomic Energy Agency (IAEA), the UN Office for Disarmament Affairs, and the Office of the UN High Commissioner for Human Rights (OHCHR), the groups claimed that multiple underground tunnels and chamber systems had been constructed in areas north of Jamshoro near Noriabad, around Kambar-Shahdadkot, and west of Manchar Lake.

The letter was shared by Shafi Burfat, Chairman of Jeay Sindh Muttahida Mahaz, on his official X account...