Iran’s foreign ministry on Sunday summoned the Pakistani ambassador after Tehran accused Islamabad of harbouring a jihadist group behind a deadly suicide attack on security forces.
"The Islamic Republic of Iran expects Pakistan's government and Army to seriously confront ... The terrorist groups active on its border with Iran," the foreign ministry said in a statement.
An Iranian official at the ministry called on Pakistan to quickly take the necessary steps for the identification and arrest of the attack's perpetrators.
The suicide bombing on Wednesday killed 27 members of Iran's Revolutionary Guards travelling on a bus in the volatile southeastern province of Sistan-Baluchistan, which straddles the border with Pakistan.
The attack was claimed by the jihadist outfit Jaish al-Adl ("Army of Justice"). It was formed in 2012 as a successor to the Sunni extremist group Jundallah (Soldiers of God), which waged a deadly insurgency for a decade before it was severely weakened by the capture and execution of its leader Abdolmalek Rigi in 2010.
