Multiple attacks in Pakistan's Parachinar, Quetta killed 62 people and wounding nearly 100.

Peshawar/Karachi: Twin blasts tore through a market crowded with Eid shoppers in a mainly Shia town, a suicide bomber blew up his explosives-laden car and militants opened fire on police in separate attacks in Pakistan's three major cities on Friday, killing 73 people and wounding nearly 100.

The suicide bomber blew up his explosives-laden car near Inspector General of Police Ehsan Mehboob's office in Quetta, the capital of Balochistan province, killing at least 13 people, including seven policemen, and wounding 21 others.

The blast was claimed by both the local affiliate of the Islamic State terror group and by Jamaat-ul-Ahrar (JuA), a splinter group of the Tehrik-e-Taliban Pakistan.

Thirteen people, including seven policemen, died in the suicide car bombing, officials said.

Hours later, two back-to-back blasts tore through a market crowded with the people shopping for Eid in the Shia-dominated Parachinar city in the Kurram tribal region, killing at least 45 people, mostly Shias, and injuring 75 others.

The first blast occurred during rush hour in Turi Market, where a bus terminal is also located. The second blast took place as rescuers and bystanders rushed to aid those who had been hurt in the first explosion.

At least 45 people have been killed and 75 others injured in Parachinar, an official from the Parachinar administration told PTI.

Earlier, Medical Superintendent of the District General Hospital, Parachinar, Sabir Hussain, confirmed the death of at least 25 people and injuries to over 100 in the blasts. More than 20 of the injured were in critical condition.

No group claimed responsibility for the blasts. However, Sunni militant groups have claimed responsibility for several attacks in the area in the past.

On Friday evening two armed men on a motorcycle, with their faces covered with helmets, opened fire on police officers at a roadside restaurant in Karachi and killed four of them.

An assistant sub-inspector was among those killed in the attack, said Superintendent of Police Asif Ahmad.

In Parachinar, officials said the blasts on the last Friday of the holy month of Ramazan targeted people shopping in the area and those heading out of the city ahead of Eid.

The emergency and rescue services shifted injured to Agency Headquarters hospital Parachinar. The security forces cordoned off the entire area and started search operation.

Pakistan Army contingents and FC personnel reached the site of the attack to aid in rescue efforts.

"Two Army aviation helicopters have taken off from Peshawar to Parachinar for the speedy evacuation of the injured to Peshawar", the army said in a statement.

"Rescue operation in progress," it added.

Pakistan Army, meanwhile, launched a countrywide intelligence-led military operation against militants.

Army spokesman Major General Asif Ghafoor said that security has been tightened across the country.

"Special Intelligence-Based Operation (IBOs) and search operations (were) launched in coordination with intelligence and other Law Enforcement Agencies", he said.

Prime Minister Nawaz Sharif condemned the attacks, saying that terrorists involved in the attacks will be taken to task and all out efforts will be taken to eliminate terrorism.

President Mamnoon Hussain, Senate Chairman Raza Rabbani, Punjab Chief Minister Shehbaz Sharif, Governor of Balochistan Muhammad Khan Achakzai and former president Asif Ali Zardari, among others, also condemned the attack.

Balochistan government spokesperson Anwarul Haq Kakar told Geo News that the suspected Quetta bomber tried to break a security perimetre to target the police offices but blew up after policemen standing guard attempted to stop him.

Kakar blamed India for the Quetta blast.

An initial investigation report by Civil Defence Director Aslam Tareen revealed that 75 kilogrammes of explosives were used in the Quetta blast.

DIG Quetta Abdul Razzaq Cheema, addressing the media, said they are examining CCTV footage to determine the details of the incident.