At least 15 people, including Awami National Party (ANP) leader Barrister Haroon Bilour, embraced martyrdom after a suicide bomber targeted a party rally in the Yakatoot area of Peshawar on Tuesday night, CCPO Qazi Jamilur Rehman confirmed.
"Entire country is in mourning after the suicide explosion", according to a statement released by PTI.
This photograph taken on April 25, 2013 shows Peshawar provincial assembly candidate Haroon Bilour (2nd L) attending a meeting with party activists for the forthcoming general election in Peshawar.
A case over the incident has been registered at police station Agha Mir Jani Shah with SHO Wajid Ali as the complainant.
The Election Commission has delayed the election on Peshawar's PK-78, from where ANP leader Haroon Bilour was contesting.
The Khyber Pakhtunkhwa Bar Council has also announced a three-day mourning in light of the attack, with lawyers beginning the boycott of court proceedings today.
Earlier, Bilour's 16-year-old son was reported to have been injured in the blast.
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She doubled back towards the child and shook his hand, before breaking out in a laugh as the little boy looked on, unsmiling. Meghan debuted her third outfit of the day , wearing a stunning belted black cocktail dress by designer Emilia Wickstead.
Local authorities said a preliminary investigation concluded that the attack was targeted on Bilour and that "a young boy blew himself up at the main entrance of the gathering when Bilour entered the venue", Dawn newspaper reports.
Bomb disposal squad chief Shafqat Malik said an eight-kg TNT explosive was used in the blast.
During that time the military waged a major offensive against militants in the Swat Valley. His body was later shifted to Bilour House where ANP workers gathered in great numbers to pay respect to their deceased leader. Hospital officials feared the death toll might rise as several of the injured were in critical condition.
Although there has been no immediate claim of responsibility for the attack, the city of Peshawar has for decades been a victim of militancy due to its status as a frontline for the ongoing war against terrorism as well as its proximity to the restless tribal areas and the Pak-Afghan border.
Chief Election Commissioner Raza Khan said the attack on an electoral candidate, despite the ECP's directions to provide security, was a result of the security institutions' negligence.
Mosharraf Zaidi, head of Alif Ailaan, flayed the attack, saying "The horror continues for the Bilour family".