The five American suspects were said to be in contact with an outlawed Pakistani militant group, Jaish-e-Mohammad , that has links with al-Qaida and Taliban extremists.

VOA: standard.2009.12.11

Pakistani police say the men were detained during a raid on the home of a local leader of the banned militant group Jaish-e-Muhammad, in Pakistan's Punjab province.

VOA: standard.2009.12.11

That attack, by car bomb as well as gunmen, looked like the work of Pakistan-based insurgents: one such group, Jaish-e-Muhammad, took responsibility for it, but later retracted the claim.

ECONOMIST: Were Pakistanis involved?