Pakistani President Pervez Musharraf says Pakistani nuclear scientist Abdul Qadeer Khan provided around 20 centrifuges to North Korea.

In his autobiography published on Monday, Musharraf said Kahn produced around two-hundred centrifuges between 1994 and 1996, and provided around 20 of them with related data to Pyongyang.

Musharraf added that North Korean nuclear scientists had started visiting Pakistan from 1999 to get technological assistance regarding centrifuges, which play a vital role in the process of enriching uranium.