Weapons and 420 kilograms (926 pounds) of hashish, opium and heroin also were confiscated, he said. Two of the alleged traffickers were wounded in gun battles during the five-day operation.
U.S. drug officials and the NATO-led coalition lent technical support for the operation that began Dec. 1.
Ahmadi said the Afghan government plans to burn 200 metric tons (220 short tons) of drugs seized in operations this year.
Insurgents conduct targeted attacks to undermine public confidence in the government and show they remain a resilient force, despite being outmanned by Afghan and U.S.-led coalition forces.
Associated Press Deb Riechmann, Heidi Vogt and Patrick Quinn contributed to this report.