KABUL— Afghan President Hamid Karzai said Saturday that the recent assassination attempt on the country’s intelligence chief was planned in Pakistan, but vowed it would not stop him from seeking Islamabad’s help in coaxing militants to the negotiating table.

The attack, conducted by a suicide bomber posing as a peace messenger, severely wounded Asadullah Khalid, dealing a setback to fragile efforts to reconcile with the Taliban and find a political resolution to Afghanistan’s war, now in its 12th year.