Most casualties took place in Parachinar where two bombs went off with short interval in the crowded Tori Market when people were busy in Eid shopping.
The second explosion occurred as people rushed to rescue and assist those wounded in the first explosion.
"Both were the suicide blasts in which 25 people have lost their lives while more than 70 others were wounded, but the death toll could rise as many injured are in critical condition", he said. Police said that a banned group was involved in killing of cops in Karachi but did not identify the attackers.
Emergency has been declared in the hospitals and all injured were shifted to the agency's headquarters hospital.
The tribal district and particularly its main town, Parachinar, has time and again been targeted by militants by carrying outs suicide attacks.
Pakistan People's Party Chairman Bilawal Bhutto said his thoughts and prayers are for the bereaved families and strongly condemned the blasts in Parachinar and Quetta. Earlier in the day, a suicide vehicle bomb blew up in Quetta and killed at least 13 people, including six policeman. He also added that security has been tightened across Pakistan.
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.
Relatives mourn next to the body of a police officer killed by gunmen, at a morgue of a hospital in Karachi, Pakistan, Friday, June 23, 2017.
Jamaat ur Ahrar, a splinter group of the Pakistani Taliban, claimed responsibility for the attack in a message sent to Reuters by its spokesman, Asad Mansur. Security forces present in the area reached the site and initiated the rescue operation.
Two military helicopters also left for Parachinar to airlift the injured to Peshawar, the ISPR said in a statement. Special Intelligence-Based Operations (IBO) and search operations were launched in coordination with intelligence and other law enforcement agencies. In January, a bomb ripped through the crowded market of Parachinar, killing 22 people and wounded over 100.
The Quetta blast took place outside the office of the police chief of Balochistan, a mineral-rich province that remains in worldwide headlines for huge Chinese investment in the strategic China-Pakistan Economic Corridor project and separatist insurgency. In March a second Taliban attack killed a further 22 people.