The ceremony was scheduled to be held on Monday, but President Alvi had refused to administer the oath to the lawmakers, compelling the government to postpone it.
Altaf Hussain, Pakistan's powerful Muttahida Qaumi Movement leader, was arrested on Tuesday in London on charges of money laundering.
Colonel Tahir of the Rangers said that the intelligence-based raid was launched after reports that people involved in crimes were hiding there.
Springing a surprise, independents backed by jailed former prime minister Imran Khan's Pakistan Tehreek-e-Insaf party won the lion's share of 101 seats in the National Assembly in Thursday's election.
Eleven people died in sectarian violence in Pakistan's largest city today, taking the overall death toll in two days to 18 as unrest spiralled out of control on the eve of the Islamic holy month of Muharram.
With the National Assembly Deputy Speaker Qasim Suri rejecting the no-confidence motion moved by the Opposition, Pakistan Prime Minister Imran Khan on Sunday said that the conspiracy hatched by a foreign country to topple the Pakistan Tehreek-e-Insaf (PTI) government in the country has failed.
The banned Tehrik-e-Taliban Pakistan has said that it would not rule out a ceasefire if Pakistan's new government "shows seriousness" about its offer of holding a dialogue.
The National Assembly session will be held at the Parliament House at 4 pm (local time), according to the schedule issued by the assembly secretariat. It also issued a 24-point agenda for the session and the no-confidence motion is fourth on the agenda.
Three Pakistani men, alleged to be 'spies' of India's external intelligence agency Research and Analysis Wing, have been acquitted by an anti-terrorism court in Karachi citing lack of evidence in five cases relating to carrying explosives and illegal weapons, media reported on Sunday.
Sources in the PML-N told the Press Trust of India in Lahore that Nawaz Sharif decided to withdraw himself from the race for the prime minister's office for his daughter and political heir, Maryam Nawaz, 50.
The kidnapping of MQM workers is a message from Pakistani security agencies that any show of allegiance to Altaf Hussain will be met with a brutal response, says Aveek Sen.
"In the coming days if we see a political or constitutional upheaval in Pakistan, or an increase in instability, then we cannot rule out the possibility of another coup in the country," said defence expert Sanjeev Srivastava.
Pakistan's National Assembly session was on Thursday adjourned abruptly till Sunday after opposition lawmakers demanded an immediate vote on a no-confidence motion against embattled Prime Minister Imran Khan who has effectively lost majority in the lower house.
The Election Commission of Pakistan has announced that independent candidates, a majority of them supported by the PTI secured 101 seats, followed by Pakistan Muslim League-Nawaz (PML-N) with 75 seats, Pakistan Peoples Party (PPP) getting 54 seats, and Muttahida Qaumi Movement-Pakistan (MQM-P) bagging 17 seats.
Among the political parties, the Pakistan Muslim League-Nawaz (PML-N) emerged as the largest party, winning 227 seats, followed by the Pakistan Peoples Party (PPP) with 160 seats.
A news report claimed India has been helping the Muttahida Qaumi Movement with funds and training to create unrest in Karachi.
The founder and chief of Pakistan's Muttahida Qaumi Movement, under fire for allegedly receiving funds from India, has swore that neither he, nor his party had any connection with India's external intelligence agency RAW.
The lawmakers expressed concerns about "pre- and post-poll rigging in Pakistan's recent parliamentary elections" and urged the US Congress to "withhold recognition of a new government in Pakistan until a thorough, transparent, and credible investigation of election interference has been conducted".
Pakistan's intelligence agency detained bothe the clericks for their alleged links with the Muttahida Qaumi Movement, official sources said on Saturday.
Hafiz Saeed-backed Allah-o-Akbar Tehreek (AAT) had fielded 265 candidates -- including 13 women -- countrywide.
Jailed former prime minister Nawaz Sharif's Pakistan Muslim League-Nawaz with 64 and former president Asif Ali Zardari's Pakistan Peoples Party with 43 seats are placed at number two and three respectively, the Election Commission of Pakistan said.
Several retired and serving military officers attend Pervez Musharraf's funeral prayers.
Sharif, the three-time former premier, said that there is a need for all the political parties to sit together and form a government to pull Pakistan out of its difficulties.
The cable was reportedly sent on March 7, a day before the Opposition submitted the no-confidence motion and requisitioned a National Assembly session for voting on it.
Pakistan's embattled Prime Minister Imran Khan on Wednesday summoned a special session of the federal cabinet amidst reports that two ministers belonging to the ruling coalition partner Muttahida Qaumi Movement-Pakistan have resigned after their party announced that it will support Opposition's no-confidence motion.
The Pakistani election on July 25 has a strong Indian flavour and connection, says Vivek Shukla.
PML-N supremo Nawaz Sharif is still in the race for the prime ministerial slot despite his party not securing a simple majority in the Feb 8 general elections in Pakistan, some PML-N leaders said on Monday.
Shehbaz Sharif, the younger brother of former premier Nawaz Sharif, is expected to become Pakistan's new prime minister as the coalition of leading political parties led by them is set to comfortably cross the simple majority mark to form the next government after elections produced a split mandate.
Bilawal has said the reality is that his party does not have a mandate to form a federal government.
He said as per the US, India was a sovereign state, so "what are we then?" he asked.
Pakistan's embattled Prime Minister Imran Khan on Wednesday shared some details from what he called a "foreign conspiracy letter" with senior journalists and cabinet members, asserting that the document was authentic.
The Hindu Marriage Bill 2017, which is the first elaborate Hindu community's personal law, was adopted by the Senate on Friday.
Pakistan's senate has passed a resolution making it mandatory for Prime Minister Nawaz Sharif to attend its session at least once a week after he failed to turn up since assuming the position last year.
A ceremony to launch Pakistani teenage rights activist Malala Yousufzai's book was scrapped after the government of the restive Khyber-Pakhtunkhwa province said it could not provide security for the event.
The three main political parties in Pakistan on Sunday intensified their efforts for the formation of a coalition government after it became clear that the coup-prone country faced a hung Parliament after general elections marred by allegations of rigging.
He said alleviation of poverty from interior Sindh will be among top priorities of his government.
PTI leader Naeenul Haq told media on Saturday night that consultations are on to complete the number game.
A single party will need at least 137 of the directly elected seats to be able to form the government on its own.
India will need to watch carefully and understand the new round of instability and uncertainty in Pakistan, while charting the course of its future diplomatic initiatives, points out Rana Banerji, who headed the Pakistan desk at the Research and Analysis Wing, India's external intelligence agency.
Khan's spokesman Dr Shehbaz Gill said that the prime minister has just a slight fever and cough.