An event to launch her memoir "I am Malala" at the Area Study Centre of Peshawar University on Monday was called off after police refused to provide security, organisers told AFP.

She had not been due to attend in person. "We were forced to cancel it. We were pressurised by provincial ministers and university vice-chancellor," Sarfaraz Khan, the Area Study Centre Director, told AFP.

"When I refused to follow this illegal order (to cancel the event) police refused to provide security."

Khan said he received numerous phone calls from two provincial ministers, followed by the university vice-chancellor, registrar and senior police officers. The government in Khyber Pakhtunkhwa is led by the Pakistan Tehreek-e-Insaaf party of former cricketer Imran Khan.

Provincial Information Minister Shah Farman confirmed the administration had halted the ceremony. "It is true that we stopped them and there were many reasons for that," Farman told AFP.

He said the venue was "not suitable" for the launch and accused organisers of using the event as a way to get money from the United States. "It was just to get more US funding," Farman said.

The book describes Malala's life under the Taliban's brutal rule in the Swat Valley in the mid-2000s and hints at her ambition to enter Pakistani politics. While it has had a positive reception around the world, reaction to the book inside Pakistan has been mixed. Some private schools banned it from their premises in November due to what they called its "anti-Pakistan and anti-Islam content".