Dhaka, Nov. 15 -- Pakistan said Friday it had arrested four members of a cell over this week's suicide bombing in Islamabad, which the government said was led from Afghanistan.

The Tuesday attack outside court buildings was claimed by a faction of the Pakistani Taliban, known as the Tehreek-e-Taliban Pakistan (TTP).

Those arrested in connection with the bombing, which killed 12 people and wounded 37, were linked to the TTP, according to Islamabad.

"The network was handled and guided at every step by the. high command based in Afghanistan," a government statement said, adding that the cell's alleged commander and three other members were in custody.

"Investigations are continuing, and more revelations and arrests are expected," it said...