American intelligence service used bugs, phone taps and cybermonitoring to obtain information from European Union embassies and offices in Washington, New York and Brussels, a German weekly reported on Sunday.
The European Union has expressed regret over the hanging of the Parliament attack convict Afzal Guru and asked India to put a moratorium on executions.
In a bid to attract holiday makers from abroad, India has launched a major tourism promotion campaign at the ITB Berlin, the world's largest travel trade show.