Kabul, Afghanistan (CNN) -- Afghan security officials said Saturday they had seized 10 tonnes of explosives and foiled plans to stage attacks in the capital, Kabul.
Three Pakistani citizens and two Afghans were captured, the National Directorate of Security said in a statement.
The five suspected militants confessed their involvement during questioning and admitted to being members of Pakistani and Afghan Taliban terrorist groups, the NDS said.
The explosives -- amounting to about 22,045 pounds -- were hidden under bags of potatoes in a big truck with Pakistani license plates, it said.
The suspects said they were ordered by Pakistani Taliban leaders and members of Pakistan's intelligence agency, the ISI, to transfer the explosives from the Pakistani border city of Peshawar to Kabul for use in terror attacks, the statement said.
Last Sunday, insurgents launched the wave of audacious attacks in Kabul and three other areas of Afghanistan.
The Taliban said those attacks were intended to show its enemies, including NATO, that it can strike secure locations.
ISAF said that as many as seven locations in Kabul were attacked, including the parliament building and the American, German and Russian embassies.
The renewed violence has increased concern that a rapid handover to Afghan forces will leave Afghanistan vulnerable to continued attacks by the Taliban.
International forces are due to complete the transition of security responsibilities to Afghanistan by the end of 2014.
CNN's Nick Paton Walsh and Fazal Ahad contributed to this report.