German politicians reacted angrily yesterday to news of a suspected US spy in the defence ministry, which came days after the arrest of a German foreign intelligence agency worker as a double agent. After the federal prosecutors said authorities had conducted searches in connection with a second spying case, Chancellor Angela Merkel’s coalition partners said Washington should remove any US embassy staff involved and cease spying on its ally.

Security sources told Reuters the latest suspect was from the military and worked in the defence ministry in Berlin, but no arrest appeared to have been made. The ministry confirmed its premises had been searched but gave no further details.

“It is not yet clear what is behind this,” Defence Minister Ursula von der Leyen told the Berliner Zeitung newspaper, in an excerpt of today’s edition.

It’s not yet clear what is behind this

Merkel has already said the arrest last week of a BND foreign intelligence officer for spying for Nato ally the US would, if confirmed, be a “serious case”. But she also says it will not affect transatlantic free trade talks.

The Chancellor faces criticism for not taking President Barack Obama to task sufficiently for surveillance in Germany by the US National Security Agency, which monitored her own mobile phone. The new cases put further pressure on Merkel to react.

Yasmin Fahimi, general secretary of the Social Democrats (SPD) who share power with Merkel’s conservatives, urged the “immediate removal of embassy staff involved and the immediate cessation of all other espionage in our country”.

Von der Leyen, who is from Merkel’s party, said the NSA case had “shaken confidence” in the US and it had to be made clear to the intelligence community that “not everything that is possible is politically acceptable”.