Multiple blasts killed at least 26 people and wounded dozens in two Pakistani cities on the last Friday of Ramadan, Islam's holiest month, as officials warned the toll could rise.

Authorities said 13 people were killed and 124 wounded when twin blasts tore through a market in Parachinar, capital of Kurram district.

Local official Nasrullah Khan told AFP that the first blast detonated as the market was crowded with shoppers preparing for the Eid ul-Fitr festival marking the end of Ramadan.

"When people rushed to the site... to rescue the wounded, a second blast took place," he said, adding that he could not give further details of the attack but that officials fear the toll will increase.

Sabir Hussain, the medical superintendent at Parachinar's main hospital, said it had received 13 bodies and 124 wounded.

Prime Minister Nawaz Sharif called for security to be beefed up across the country as he condemned the attack, saying that no Muslim could ever imagine committing such a "horrific" act.

Pakistan has seen a dramatic improvement in security in the last two years, but groups such as the umbrella Pakistani Taleban and other extremist outfits still retain the ability to carry out attacks.

Local lawmaker Sajid Hussain Turi, the owner of the market, said bazaars in Parachinar had been barricaded off and vehicles banned from the area after multiple attacks have hit the city this year.

Parachinar was the location of the first major militant attack in Pakistan in 2017, a bomb in a market which killed 24 people in January and was claimed by the Pakistani Taleban. In March a second Taleban attack killed a further 22 people.

There was no immediate claim in Friday's attack.

The twin blasts in Parachinar followed a bombing earlier in the day in southwestern Quetta, capital of the insurgency-wracked Balochistan province, that killed at least 13 people.

Investigators said the attack targeted police. It was claimed by both the local affiliate of Daesh and by Jamaat-ul-Ahrar (JuA), an offshoot of the Pakistani Taleban, according to the SITE monitoring group.

There was no immediate explanation for the dual claims. Daesh Khorasan Province, the Middle Eastern group's affiliate in Afghanistan and Pakistan, has been known to work with the myriad of Pakistani militant groups in previous attacks, including with JuA.

Officials at the city's Civil Hospital said at least 13 people were killed and around 20 injured, mostly by shrapnel. Police officials said nine policemen were among the dead.

At the hospital in Quetta, worried children stood by the bloodstained cots of wounded relatives, and Pakistani soldiers visited injured colleagues.

Stunned survivors could give few details about the attack. "I was sitting on a chair. There was an explosion. I got injured and fell down," said one victim, Gulzar Ahmad.

Pakistan has waged a long war with militancy, but security has markedly improved in the country since its deadliest-ever terror attack, an assault on a school in northwestern Peshawar in which Taleban gunmen left more than 150 people dead, most of them children.

That attack shocked a country already grimly accustomed to atrocities, and prompted the military to intensify an operation in the tribal areas targeting militants.

The army has also been fighting in mineral-rich Balochistan, the country's most restive province, since 2004, with hundreds of soldiers and militants killed.

Its roughly seven million inhabitants have long complained they do not receive a fair share of its gas and mineral wealth, but a greater push by Pakistani authorities has reduced the violence considerably in recent years.

Source: .khaleej Times