Afghans were responsible for two suicide bombings in Pakistan this week, including one in the capital Islamabad, the country's Interior Minister Mohsin Naqvi said on Thursday.
The two bombers who carried out the attacks have been identified as Afghan citizens, Mr Naqvi told parliament in a session broadcast live on television. There was no immediate response from Kabul.
Mr Naqvi's comments came after a suicide bomber blew himself up close to a police patrol outside a lower court in Islamabad on Tuesday, killing 12 people and wounding 27. A breakaway faction of the Pakistani Taliban, Jamaat-ul-Ahrar, claimed responsibility.
The attack came one day after a bomber rammed an explosives-laden vehicle into the main gate of a military school in South Waziristan district near the Afghan border, killing three people. Militants then entered the school, which is run by the military but educates civilians, triggering a fight with Pakistani soldiers that continued for more than 24 hours until all the attackers were killed.
Analysts said the assault on Monday seemed to be an attempt to replicate a 2014 attack on another army-run school in north-west Pakistan in which more than 130 children were killed.
Relations between Pakistan and Afghanistan have been strained in recent years, with Pakistan accusing militants sheltering across the border of staging attacks inside Pakistan. Afghanistan denies providing a safe haven to militants. Last month dozens of soldiers were killed in border clashes between the two countries.
