Some reports say he was killed in a knife attack, while others say he was shot after gunmen opened fire on his vehicle.
Senior religious scholar and a prominent political leader Maulana Samiul Haq has been assassinated at his residence in Rawalpindi while the former senator was attempting to join the protests in Islamabad.
The report said gunmen riding on motorbikes opened fire on Sami ul Haq's vehicle and as a result he was injured and then died.
Haq's son, Hamidul Haq, said his father was alone in his bedroom when he was attacked by an assailant, who escaped undetected.
However, initial reports had said that Haq had been shot.
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Later, the police announced that the hospitalized student had died. Tyrrell said a fight inside the school led to the shooting.
Maulana Mehmoodul Haq Haqqani, another brother, was professor of chemistry in University of Peshawar where he was called Father of Chemistry and later he represented Pakistan as deputy ambassador in Saudi Arabia.
He twice held roles as a member of Pakistan's Senate.
Jamiat Ulema Islam-Fazl (JUI-F) chief Fazlur Rahman said he graduated from Darul Uloom Haqqania and had a strong relationship with Maulana Samiul Haq.
Samiul Haq was now the chancellor of Darul Uloom Haqqania, a Deobandi Islamic seminary which is the alma mater of many prominent Taliban members.
He had been aligned with Pakistani Prime Minister Imran Khan's ruling Tehreek-i-Insaf party for the July 25 elections, Dawn news reported. Condemning this tragic incident, he expressed sympathy with the bereaved family.
Chief of the Army Staff (COAS) General Qamar Javed Bajwa condemned Haq's assassination and expressed grief over it, DG ISPR Maj Gen Asif Ghafoor said on Twitter.