Afghan security officials say they have foiled a huge attack in the capital Kabul, as they gave details of the seizure of 10 tonnes of explosives.

The explosives were found in a truck seized along with five militants in an operation last Sunday, a National Directorate of Security spokesman said. The group was planning to attack crowded areas in the capital, he said.....three of the captured militants are Pakistani citizens, and two are Afghans....The five suspects had confessed that the planned attack was coordinated by two Taliban commanders with links to Pakistan's main intelligence organisation the Inter-Services Intelligence agency (ISI), according to the spokesman.

The arrests, which came during a wave of insurgent attacks around the country, was kept quiet at the time because of the ongoing security operation, he said.

Afghanistan has often accused the ISI of involvement in supporting anti-government insurgents in Afghanistan....