Supporters of Imran Khan were planning to march to Islamabad on Wednesday where the former Pakistan prime minister is in custody in a corruption case, raising fears of more clashes with security forces.
Khan was arrested from the Islamabad High Court on Tuesday by Pakistan's anti-corruption agency. Police said a court hearing would take place at the police guest house where he is being held.
The arrest came a day after the country's powerful military rebuked Khan for repeatedly accusing a senior military officer of trying to engineer his assassination and the former armed forces chief of being behind his removal from power last year.
In response, his Pakistan Tehreek-e-Insaf party called for a "shut down" across the country, with Khan's supporters clashing with police in many cities and storming military buildings in Lahore and Rawalpindi, according to witnesses and videos shared by his party.
Supporters in northwestern Khyber Pakhtunkhwa province were asked to gather early on Wednesday in Swabi city to leave for Islamabad as part of a convoy, the party wrote on Twitter.
Party leaders asked workers to continue protests but not take the "law in their hands", according to messages shared on Twitter on Wednesday.
A police spokesman told Reuters on Wednesday that Khan will not be brought to court and his scheduled hearing will take place at the location where he is being held under custody.
Iran could be producing enriched uranium in a few months, the head of the UN nuclear watchdog Rafael Grossi was quoted as saying on Sunday, raising doubts about how effective US strikes to destroy Tehran's nuclear programme have been.
The Jerusalem District Court has cancelled this week's hearings in Prime Minister Benjamin Netanyahu's long-running corruption trial, accepting a request the Israeli leader made citing classified diplomatic and security grounds.
The Israeli military ordered Palestinians to evacuate areas in northern Gaza on Sunday before intensified fighting against Hamas, as US President Donald Trump called for an end to the war amid renewed efforts to broker a ceasefire.
Russia used hundreds of drones, cruise and ballistic missiles to attack western, southern and central Ukraine overnight, damaging homes and infrastructure and injuring at least six people, local authorities said on Sunday.
At least seven Palestinians were killed and several others injured early Sunday in a series of Israeli airstrikes targeting Gaza City and Khan Younis in the southern Gaza Strip, Palestinian News & Information Agency (WAFA) reported.