Pakistan's capital was put under a security lockdown on Sunday ahead of protests by supporters of jailed former Prime Minister Imran Khan calling for his release.Highways leading to Islamabad through which supporters of Khan,

Islamabad was under lockdown Sunday amid nationwide protests in favor of releasing former Prime Minister Imran Khan from prison.

Islamabad: Pakistan Interior Minister Mohsin Naqvi Sunday vowed to "protect Islamabad" as thousands of supporters of Imran Khan made their way to the capital to stage a protest amid heavy deployment of security forces and restrictions on mobile and internet services.