The activists of PFI had allegedly mobilised rioters and were in contact with Hayat Zafar Hashmi, the key conspirator of the violence, the police said.
He was the chief of the hardline political party Jamiat Ulema-i-Islam-Sami.
Delhi Jama Masjid Shahi Imam Syed Ahmed Bukhari called the killing an "act of cowardice" and "an act against Islam".
Opposition leaders on Saturday stepped up pressure on Lok Sabha Speaker Om Birla for stringent action against Bharatiya Janata Party's Ramesh Bidhuri over his derogatory remarks against Bahujan Samaj Party MP Danish Ali in the House.
The explosion took place at 4 pm at the Jamiat Ulema-e-Islam-Fazl workers' convention in Khar, the capital of Bajaur tribal district.
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.
The idols of deities at Shri Mari Maata Mandir in Karachi's Korangi area were attacked on Wednesday.
Police in Pakistan's restive Khyber Pakhtunkhwa province said on Monday that an initial probe has suggested that the banned terrorist group Islamic State is behind the suicide attack on a political convention of a hardline Islamist party that killed at least 46 people and injured over 100.
The meeting is being speculated to have revolved around the recent political developments in the country, with the local media reporting that the agenda of the meeting could have revolved around the upcoming Organisation of Islamic Countries (OIC) summit in Pakistan, the ongoing unrest in Balochistan and the upcoming no-confidence motion against Imran Khan.
In a live-address to the nation, 69-year-old Khan also discussed a 'threat letter' that purportedly showed 'evidence' of a foreign conspiracy to topple his coalition government.
A central leader of radical Jamiat Ulema-e-Islam party, Rehmat Salam Khattak, is among 30 arrested in raids following the attack on the temple in Terri village in Khyber Pakhtunkhwa's Karak district on Wednesday, Station House Officer Rehmatullah Khan told PTI.
At least 10 people were killed and several others injured when a powerful explosion ripped through an election meeting organised by a Jamiat Ulema-e-Islam leader in northwest Pakistan on Tuesday, officials said.
Trying to fish in troubled waters, Pakistan's parliament on Thursday passed a resolution condemning the hanging of Afzal Guru and demanded the return of his body to his family.
The death toll in a devastating bomb attack on an election rally in Pakistan's restive Kurram tribal region rose to 24 on Tuesday while another 70 victims were being treated in hospital, officials said.
At least 15 people were killed and nearly 70 injured when a powerful bomb ripped through a political rally in central Pakistan, in one of the deadliest attacks ahead of the landmark May 11 general elections.
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.
The Supreme Court on Thursday voiced serious concern over the running of fake news on social media platforms and web portals, and said even news shown in a section of channels bears communal tone, which may bring a bad name to the country.
The election of a new prime minister by Pakistan's National Assembly on Friday will be a three-way contest between Raja Parvez Ashraf of the ruling PPP, Sardar Mehtab Abbasi of the main opposition PML-N and Jamiat Ulema-e-Islam chief Maulana Fazlur Rehman.
The attack surprised political observers, as the JUI is perceived as being pro-Taliban.
Pakistan's hardline Jamiat Ulema-e-Islam chief Maulana Fazlur Rehman on Wednesday escaped an assassination bid by a suicide bomber, who blew himself up near a police post in the country's restive northwest, killing at least seven people and injuring 18 others.
A former Pakistani lawmaker on Monday offered a $200,000 bounty for anyone who kills the maker of an anti-Islam film during a protest against the movie in Peshawar, days after a federal minister announced a reward of $100,000 for eliminating the person behind the video. Ikramullah Shahid, thea leader of a faction of the Jamiat Ulema-e-Islam, made the offer before a crowd of 15,000 people during a rally led by the Defa-e-Pakistan Council.
Addressing a health card distribution ceremony in Peshawar, Chief Minister Khan said the government has issued orders to rebuild the temple. The attack on the temple in Terri village in Khyber Pakhtunkhwa's (KP) Karak district on Wednesday drew strong condemnation from human rights activists and the minority Hindu community leaders.
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.
Nirmohi Akhara, the main plaintiff in the Ayodhya title suit, wants the mediation of former President APJ Abdul Kalam, Islamic seminary Darul Uloom Deoban and the national organisation of Muslim ulemas-- Jamiat-Ulema-e-Hind -- along with Hindu religious leaders like Baba Ramdev, Shri Shri Ravi Shankar and Murari Bapu.
Kashmiri separatists on Monday rejected the suggestion made by the Jamiat Ulema-i-Hind, the powerful body of Deobandi clerics, at its Kashmir conference at Deoband that 'the issue should be resolved within the parameters of the Constitution of India.'
As clamours for his resignation mounted with withdrawal of support from his key ally Muttahida Qaumi Movement, Pakistan's beleaguered Prime Minister Yousuf Raza Gilani on Monday reached out to the opposition Pakistan Muslim League-Quaid-e-Azam in desperate attempts to shore up his government.
Hafiz Saeed-backed Allah-o-Akbar Tehreek (AAT) had fielded 265 candidates -- including 13 women -- countrywide.
Jamiat Ulema-e-Islam-Fazl chief Fazlur Rehman has claimed that 9,000 agents of US-based private security firm Blackwater are operational in Islamabad. The Daily Times quoted Fazl as saying that Blackwater is responsible for carrying out Taliban-like terrorist activities in Pakistan.
Jamiat Ulema-i-Hind president expresses concern at the "atmosphere of fear" following violence by 'gau rakshaks'.
With the Uttar Pradesh government set to conduct a survey of private madrassas, proprietors of the theological schools fear that their institutions may be declared illegal and 'run over by bulldozers'.
Jamiat Ulema e Islam chief Maulana Fazlur Rehman, once considered as the patron of Taliban chief Mullah Omer, is today struggling to save his life in Pakistan, as Taliban and Al Qaeda members are chasing him like shadow.
The Jamiat Ulema-e-Islam-Fazl has blamed the Raymond Davis network for the two suicide attacks on party chief Maulana Fazlur Rehman, and said the murder attempts were a reaction to Fazl's stand taken on the Davis detention issue and drone attacks in Pakistan's tribal region.
Over 100 artistes and academicians belonging to Muslim community launched a scathing attack on Wednesday, on Jamiat-Ulema-e Hind resolution on 'Vande Mataram' saying the move would only "unnecessarily provoke" a controversy and strengthen Hindutva forces.
Leaders of the Pakistan Muslim League and hard-line religious parties joined a rally in Islamabad organised by a front of the outlawed Jamaat-ud-Dawah, during which speakers called for a jihad to resolve the Kashmir issue. PML-N spokesman Siddique-ul-Farooq, Jamaat-e-Islami chief Syed Munawar Hasan, Jamiat Ulema-e-Islam leader Maulana Samiul Haq and representatives of the All Parties Hurriyet Conference joined the rally organised by the Tehrik Azadi-e-Kashmir.
Nine leading Pakistani clerics, who had gathered for a meeting that declared suicide attacks as un-Islamic, fell seriously ill after eating 'halwa' served to them, prompting the police to investigate whether an attempt was made to murder them.
Diminishing the prospects of an out-of-court settlement of the vexed Ram Janmabhoomi-Babri Majid issue, Muslim bodies are gearing up to file five more Special Leave Petitions in the Supreme Court to challenge the Allahabad High Court verdict.
Opposition political parties this month sought a no-confidence motion in parliament to remove Pakistan Prime Minister Imran Khan.
Caretaker Interior Minister Hamid Nawaz Khan said that President Pervez Musharraf, Nawaz Sharif, Maulana Fazlur Rehman, former federal ministers Aftab Ahmed Khan Sherpao, Ejaz-ul-Haq, Amir Muqam and Sheikh Rashid Ahmed and former Punjab Chief Minister Chaudhry Pervaiz Elahi faced threats to their lives from extremists.
The 29th general session of Jamiat Ulema-i-Hind, which began in Hyderabad on Saturday also appealed to the government, the political parties, media and citizens of the country to not link terrorist activity to any particular religion and the community.
The first of the many appeals in the Ayodhya title suit was filed on Monday before the Supreme Court by the Jamiat Ulama-i-Hind, the second plaintiff in the case. Challenging the landmark verdict of the Lucknow bench of the Allahabad High Court, JuH in its appeal has stated that the HC veered away from the facts and law and focused more on the circumstances and the extraneous material.