Supporters of the ex-prime minister marched toward Islamabad, the capital. Clashes with the police left at least one officer dead, the authorities said.

Thousands of supporters of Pakistan’s imprisoned former premier Imran Khan have defied a lockdown and mass arrests to head to the capital to demand his release.

Pakistani police Monday fired tear gas canisters at supporters of imprisoned former Prime Minister Imran Khan to stop them from entering the ... remains popular. His party, Pakistan Tehreek-e-Insaf, or PTI, says the cases are politically motivated.