A suspected U.S. drone attack killed eight militants in the German north-western Pakistan on Monday, Pakistani intelligence officials.
They were killed when two missiles from a suspected CIA pilotless aircraft struck a mosque in Mirali in North Waziristan, the intelligence officials said.
The strikes came a day after the United States and Britain issued warnings of an increased risk of terrorist attacks in Europe.
The US State Department warned American citizens to exercise caution if travelling in Europe. Britain raised the threat level to “high” from “general” for its citizens travelling to Germany and France.
The plot that triggered the alerts involved al Qaeda and allied militants, possibly including European citizens or residents, intelligence sources said last week.
They said the militants were the overhead of coordinated attacks in European cities.
Western security officials said they believe a group of people in northern Pakistan joined the conspiracy.
The United States has stepped up drone missile bombings on the Pakistan border with Afghanistan.
It is as yet unclear, however, how closely these intensified drone strikes are linked to the reported plot in Europe.
Nato helicopters from Afghanistan have also attacked militant targets within Pakistan, drawing anger in Islamabad
which has condemned these as violation of sovereignty.
Pakistan have a supply routes for NATO forces in Afghanistan after a helicopter strike last week killed three Pakistani soldiers in western Kurram.