Five soldiers embraced martyrdom when terrorists from inside Afghanistan across the Pakistan-Afghanistan border, opened fire on Pakistani troops in Kurram District on Sunday.
According to the ISPR, terrorists suffered heavy causalities in Pakistan Army's retaliation.
"Pakistan strongly condemns the use of Afghan soil by terrorists for activities against Pakistan and expects that [the] interim Afghan government will not allow conduct of such activities against Pakistan in future," the ISPR statement said.
The Pakistan Army is determined to defend Pakistan’s borders against the menace of terrorism and such sacrifices of our brave men further strengthen our resolve, it added.
Interior Minister Sheikh Rashid Ahmed also strongly condemned the cross-border attack on security forces at Pak-Afghan border in Kurram district.
In a statement on Sunday, he expressed sorrow and grief over the martyrdom of security personnel in the attack.
The Minister asked the Taliban government to stop such terrorist activities as per its promise.
Paying rich tribute to martyrs, he said their sacrifices will not go in vain.
Earlier in the day, security forces conducted an intelligence-based operation (IBO) near Dial road in Tank, Khyber Pakhtunkhwa and killed a suicide bomber, the ISPR said in statement.
The ISPR said the operation to eliminate the terrorists' abettors and accomplices was continuing.