Tahir-ul Qadri plans to lead a mass march to Islamabad to protest against immoral politics.

Tahir-ul Qadri, a religious leader in Pakistan, plans to lead a mass march to Islamabad on Sunday to protest against corruption, despite threats to his security.

Restrictions are in place across the capital and paramilitary soldiers have been called in.

But who is he and what does he want to achieve?

Al Jazeera's Osama Bin Javaid reports from Lahore.