In a statement this afternoon, the Foreign Ministry said any incident of "interception of communications" is "contrary to international law".
At the instigation of Foreign Minister Westerwelle, the British ambassador was asked to an interview in the Foreign Office.
The head of the European Department asked for a response to current reports in the British media, and pointed out that the interception of communications from the premises of a diplomatic mission would be behaviour contrary to international law.
More top news
Police are issuing appeals for a gang who attacked two men after luring them into meeting with what they thought were underage girls.
Aston Villa came from behind to shock Liverpool at Wembley and book their place in the FA Cup final against Arsenal next month
The film appears to show the executions of Ethiopian Christians on the beach in Libya. It has not been verified.