'Since then Najimiddin is running a training camp near Mir Ali,' the official said. 'Some Germans have received training from here and our local sources say at least three German nationals are presently getting training at this camp. But we have yet to confirm the report.'

Among the other militants killed in Monday's attack was a Taliban commander in Afghanistan, Najeebullah Zarzai.

The US Central Intelligence Agency (CIA) has intensified drone attacks in Pakistan's tribal region since late last year and killed dozens of second tier Al Qaeda leaders.

A similar strike last month eliminated the leader of Pakistan's Taliban, Baitullah Mehsud, who is believed to be behind dozens of suicide attacks, including the one that killed former prime minister Benazir Bhutto.

Islamabad officially protests the regular drone attacks saying these violate its sovereignity but unofficially security officials admit that most of the information leading to US missile attacks comes from Pakistani intelligence agencies.