Earlier in March, at least 24 people were killed and more than 90 injured in a bombing outside an imambargah located in a busy Parachinar market.
Terror returned to Kurram Agency on Friday when two blasts in a busy Parachinar market claimed the lives of more than 15 people and left over 70 others injured. However, Sunni militant groups have claimed responsibility for several attacks in the area in the past.
Sabir Hussain, medical superintendent of Parachinar Hospital, said that in addition to the 50 found dead, a further 250 people were wounded, with 60 of the seriously wounded being transferred to the bigger city of Peshawar.
Pakistan has seen a dramatic improvement in security in the last two years, but groups such as the umbrella Pakistani Taliban, LeJ and other extremist outfits still retain the ability to carry out attacks.
A vehicle bombing in Quetta, the capital of the Pakistan's Baluchistan province, killed at least 12 people, including four police officers, on the morning of June 23.
Major General Asif Ghafoor, a military spokesman, linked the attacks to alleged militant sanctuaries in neighbouring Afghanistan and promised greater border security.
That attack was claimed by both the Islamic State and an offshoot of the Pakistani Taliban.
According to a local administrator Shoukat Yousafzai, death toll of the twin blasts that ripped through a market on Friday in Parachinar city of tribal region Kurram Agency has risen to 67, after 22 wounded people succumbed to their injuries during treatment at different hospitals on Saturday.
A faction of Pakistan-based militant group Lashkar-e-Jhangvi on Saturday claimed responsibility for the Parachinar attacks.
Provincial government spokesperson Anwar-ul Haq Kakar said it was likely that the attacker wanted to target the IGP's office.
Prime Minister Nawaz Sharif called for increased security across the country as he condemned the attack, saying that no Muslim could ever imagine committing such a "horrific" act. The first suicide bomber detonated his explosives, killing and wounding a number of people.
Security forces later raided a militant hideout in Peshawar, about 300 kilometers (180 miles) away, triggering a shootout in which three Pakistani Talban were killed, according to a senior police official.
Officials said the explosion was loud enough to be heard from a distance and shattered windows of nearby buildings.
The United States, Turkey, Arab and European powers are also participating in a coalition bombing Islamic State, a Sunni Muslim militant group.
Elsewhere in the country, in the port city of Karachi, gunmen opened fire on police, killing at least four officers before fleeing the scene.
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