Both Pakistan Tehreek-e-Insaf chairman Khan and Pakistan Awami Tehreek chief Qadri started separate rallies from Lahore on Thursday and reached in the national capital after more than 35 hours. They are camping at different venues.
Khan warned that unless their demands are not met within a certain time period, his 'tsunami' would cross into the Red Zone and protest in front of Parliament.
On the other hand, Qadri presented a list of 14 demands in which he demanded that the Sharif government resign and the (provincial) assemblies are dissolved "within 48 hours".
Khan is protesting against alleged rigging of last year polls while Qadri had announced to bring a revolution in the country.
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Their demands invited strong criticism from PML-N government, with Information minister Pervaiz Rashid saying "They (Khan and Qadri) are giving deadline to democracy in the country and not the government."
Altaf Hussan, London-based chief of Mutahida Qaumi Movement, urged both leaders to give up their extreme demand and withdraw deadlines.
He also asked the government to start talks for finding a solution within the constitution of the country.
There are also reports that government was planning to shift the venue of Khan's protest which is a few hundreds meter away from the Red Zone.