The European Union's executive arm said Friday that it will demand answers from Washington and London about reports that U.S. and British intelligence spied on European Commission Vice President Joaquin Almunia.

"This piece of news follows a series of other revelations which, as we clearly stated in the past, if proven true, are unacceptable and deserve our strongest condemnation," EC spokeswoman Pia Ahrenkilde Hansen.

"This is not the type of behavior that we expect from strategic partners, let alone from our own Member States," she said, referring to Britain.

"The Commission will raise these new allegations with US and UK authorities," Hansen said.

The latest revelations about Anglo-U.S. spying, which appeared in The New York Times, Britain's Guardian and German newsweekly Der Spiegel, are based on materials provided by former National Security Agency contractor Edward Snowden.

Almunia's name appears on a 2008-2009 list of targets of the GCHQ, the British counterpart to NSA, Der Spiegel said.

During that period, Almunia, as EU competition commissioner, was overseeing investigations of U.S. tech titans Microsoft and Intel.

The same documents show GCHQ/NSA was targeting the communications of U.N. agencies, humanitarian organizations and leading European corporations such as defense contractor Thales and oil giant Total. EFE