Taliban
The pair were accused of having relations "a long time ago."
The youngest-ever winner of the Nobel Peace Prize has turned down hundreds of interviews to focus on schoolwork.
Over 150 people, most of them schoolchildren, were killed in the Peshawar school massacre.
Disputes are raging among the Taliban since the death of longtime leader Mullah Omar.
WHAT'S HAPPENING
Taliban militants claimed responsibility for the attack.
Nearly 5,000 civilian deaths and injuries were recorded in the first half of 2015.
He called the decision to conceal ex-leader Mullah Omar's death a "historic mistake."
Former leader Omar's death was announced last week.
The son of ex-leader Mullah Omar accused him of a power grab.
The Haqqanis have been blamed for some of the most spectacular attacks against American targets in Afghanistan.