Karzai said he would be unable to attend the conference due to the lack of time for consultations and preparations for the trip.
He thanked the organizers of the conference for the invitation and added that he is hopeful to visit Pakistan on another occasion.
Karzai also added that he wishes success for the conference and urges the Pakistan to maintain efforts for peace in Afghanistan.
Meanwhile, a delegation of prominent political leaders have arrived in Pakistan to attend the conference.
The delegation includes Gulbuddin Hekmatyar, Ata Mohammad Noor and Karim Khalili and some other prominent leaders.
The Lahore Center for Peace and Research (LCPR) and the South Asian Strategic Stability Institute (SASSI) are organizing the event.
Source : Afghan Voice Agency(AVA)