Khan said Pakistan wants peace with India but will retaliate in case of any "aggression" by the neighbouring country.
Shehbaz, the 70-year-old younger brother of former three-time prime minister Nawaz Sharif, has served as chief minister of the country's most populous and politically crucial Punjab province thrice.
Despite the government's hectic efforts to avoid voting on the no-confidence motion against Khan, the joint Opposition succeeded in its month-long efforts to oust Khan from the prime minister's office as 174 members of the 342-member National Assembly voted against him in the wee hours of Sunday after a day of high drama.
With the Sharif family set to return to power in Pakistan amid the fast-deteriorating economic situations and political instability, it is to be seen if Shehbaz Sharif infuses fresh energy into the system, or the much-tainted family continues to resort to its old ways.
Scores of PTI workers and policemen suffered injuries in the violent clashes. So far, no casualty has been reported.
Cricketer-turned-politician Imran Khan and fiery cleric Tahir-ul-Qadri have been booked under the anti-terrorist act for attempting to attack Pakistan's parliament.
The Election Commission of Pakistan (ECP) on Tuesday publicly released the details of assets of key politicians, including that of Prime Minister Khan.
Pakistan Prime Minister Shehbaz Sharif on Thursday chose Lt Gen Asim Munir as the new Army chief to replace incumbent General Qamar Javed Bajwa.
Demonstrators took to the streets to protest against what they called the rigged election in which Pakistan ruling party is said to be winning, and erected barricades to block the movement, Dawn reported.
The Shahbaz Sharif family (his two wives and their children) invested PkRs 277 crore in 13 companies without having known sources of income.
Modi had given his maiden address to the UN General Assembly as Prime Minister in 2014.
Pakistan will not engage with India 'until and unless they lift the siege' in Kashmir, it said.
Pakistan's new Prime Minister Shehbaz Sharif and Russian President Vladimir Putin have quietly exchanged letters to strengthen bilateral relations, a media report said on Sunday, amidst allegations by Imran Khan that his maiden visit to Moscow, much against Washington's wishes, led to his ouster.
Khan said Islamabad has taken the first step on a new path to peace and progress.
The charged PTI supporters, including women and children, showed their solidarity with Khan during the rally that started at 9 pm on Sunday and lasted till 3 am on Monday.
The prime minister needs 172 votes in the lower house of 342 to foil the Opposition's bid to topple him.
Opposition leader Imran Khan on Sunday again demanded that Pakistan Prime Minister Nawaz Sharif quit for 30 days to allow an independent probe into alleged rigging in last year's polls, hours after the government outrightly rejected the proposal to end the crippling political deadlock.
Prime Minister Nawaz Sharif on Wednesday decided to meet opposition leader Imran Khan in an effort to end the anti-government protests seeking his ouster, as Pakistan's powerful military called for calm and asked all stakeholders to resolve the impasse through meaningful talks.
Pakistan cricket legend-turned-politician Imran Khan's new wife Reham Khan has revealed that she really admires her husband's love for his sons.
Senator Faisal Javed, who was injured when a bullet grazed his face, said that a party worker was killed during the attack, while another was severely injured.
Twenty-four more people were killed on Saturday as floods triggered by heavy monsoon rains inundated northern Pakistan, raising the overall death toll in the flooding to 46.
Khan, who faced his toughest political test since assuming office in 2018 due to defections in his party and cracks in the ruling coalition, in a surprise announcement during an address to the nation on Sunday said he had advised the president to 'dissolve assemblies'.
Two of his allied parties also withdrew their support and joined the ranks of the rejuvenated Opposition.
Pakistan's Election Commission on Friday disqualified former prime minister Imran Khan for five years in the Toshakhana case for hiding proceeds from the sale of gifts he received from foreign leaders.
Sharif, the PML-N prime ministerial candidate, said that Pakistan cannot become a great nation by voting leaders like Imran Khan who have made false promises to "our nation".
Sharif, 67, had to step down as the chief of the PML-N after he was disqualified as the prime minister by the Supreme Court on July 28 in the Panama Papers scandal.
According to Pakistani media reports, other names that have been doing rounds are for interim prime minister are: National Assembly Speaker Sardar Ayaz Sadiq and Petroleum Minister Shahid Khaqan Abbasi.
Pakistan's Foreign Minister Khawaja Asif now unable to hold public or party office after the verdict.
Abbasi will be sworn-in in later at a special ceremony at the President's House.
While in power, Khan repeatedly talked about making Pakistan an Islamic welfare state. However, he failed to fix the economy and the basic problem of keeping the prices of commodities in control.
The apex court within hours took suo motu notice of it and a five-member bench started hearing the case on Monday.
Pakistan's National Assembly resumed its crucial session on Monday after a two-day recess where Opposition is likely to formally table the no-trust motion against embattled Prime Minister Imran Khan amidst fluid political situation in the country.
The envoy emphasised that 'peaceful relations' with all Pakistan's neighbours, including India, were accorded 'high priority' in the foreign policy vision outlined by the incoming leadership in Pakistan.
There has always been a risk-taking edge to Imran Khan. Like him or hate him, it had to be someone like him to finally threaten to demolish the Pakistani establishment, explains Shekhar Gupta.
The Opposition parties need 172 members in the 342-member house to orchestrate the downfall of Prime Minister Khan.
'From what evidence has come up, General Bajwa somehow managed to tell the Americans that I was anti-American.' 'And so, it [the plan to oust me] wasn't imported from there. It was exported from here to there.'
Pakistan Tehreek-i-Insaf chief Imran Khan announced his plans to bring major cities in the country to a standstill, while pressing for Prime Minister Nawaz Sharif's resignation.
At least eight people, including a child, were killed and 40 injured in a stampede at a public rally by opposition leader Imran Khan in central Pakistan on Friday.
The move came hours after Khan was removed from office through a no-confidence vote held early Sunday morning, becoming the first premier in the country's history to be sent home after losing the trust of the House.
The newly-elected National Assembly, the lower house of Parliament, is meeting to elect the prime minister.