PESHAWAR, Pakistan — The capital of Pakistan was locked down Monday as supporters of jailed former leader Imran Khan marched on the city to demand his release. It is the latest upheaval to hit this nuclear-armed United States ally after days of deadly clashes between rival sectarian groups. Supporters of Imran Khan during a rally in Swabi on Sunday. “We will not return till our leader Imran Khan is released from prison,” senior PTI politician Shaukat Ali Yousafzai told NBC News, adding that police had been using tear gas, causing injuries to some PTI supporters. Aamir Qureshi / AFP - Getty ImagesSupporters of Khan also gathered to demand his release in Swabi, northwestern Pakistan on Sunday.

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Persons: Imran Khan, Khan, That’s, Abdul Majeed, Khan’s, Bushra Bibi, ”, Shaukat Ali Yousafzai, Maryam Nawaz Sharif, Uzma Bukhari, Alexander Lukashenko, Pakistan's, Aamir Qureshi, Jamal Khan, Mohammad Ali Saif, ” Saif Organizations: Getty, PTI, NBC News, AFP, Associated Press Locations: PESHAWAR, Pakistan, United States, Islamabad, Swabi, Punjab, Peshawar