He was the chief of the hardline political party Jamiat Ulema-i-Islam-Sami.
A militant commander said five people were killed in the firefight and several were injured "including Mullah Mansoor."
Jalaluddin Haqqani died a year ago due to prolonged illness and was buried in Afghan province of Khost.
The madrassa in Akora Khattak in Nowshera district of the province is known for having several top Afghan Taliban leaders among its alumni, including former Taliban chief Mullah Omar who received an honorary doctorate from the seminary.
Jalaluddin Haqqani was closely tied to Al Qaeda leaders and had played a key role in supporting the terror group in both Afghanistan and Pakistan.
A computer has helped scientists discover the largest prime number ever with over 22 million digits, breaking the previous record by approximately 5 million digits.
Mullah Akhtar Mansoor, a top Afghan Taliban leader who backed the peace process and a former aviation minister in the pre-2001 Taliban regime, has been appointed as the new chief of the insurgent group, as Taliban confirmed the death of its longtime supremo Mullah Omar.
Mullah Akhtar, a close aide of Mullah Omar who served as his deputy for the past three years, was chosen as the new leader.
Bruce Riedel, a former CIA analyst who was one of the key architects of US President Barack Obama's Af-Pak policy during his first term, has called for an offensive strategy against terrorist networks and this includes hitting out at terrorist groups inside Pakistan.
'The Mansoor Taliban is really an extension of the Haqqani Network which in turn is an instrument of the ISI. With Ashraf Ghani ready to dance to Pakistani tunes and with the Haqqani Network becoming part of the Afghan government, Pakistan is all set to see the fruition of its strategic policy,' says Sushant Sareen.
'The ISI has given a stunning display of its capacity to do with impunity what it likes within Kabul. Incensed over the triumphalism of the hardliners in Kabul, the ISI has hit out; it is a typical ISI reflex action that Indians are familiar with,' says Ambassador M K Bhadrakumar.