BERLIN -- BERLIN (AP) — Germany's interior minister is pressing for "complete information" from Washington on the alleged U.S. surveillance of Chancellor Angela Merkel's cellphone and any other snooping.

Merkel complained to President Barack Obama on Wednesday after receiving information her phone may have been monitored. German spy chiefs plan to travel to Washington for talks.

Interior Minister Hans-Peter Friedrich was quoted Sunday as telling newspaper Bild am Sonntag he wants "complete information on all accusations" and that "if the Americans intercepted cellphones in Germany, they broke German law on German soil." He added wiretapping is a crime and "those responsible must be held accountable."

News magazine Der Spiegel, whose research prompted the government's response, reported that a document apparently from an NSA database indicates Merkel's cellphone was first listed as a target in 2002.

Earlier on HuffPost:

Loading Slideshow...
  • US President Barack Obama and german chancellor Angela Merkel raise their glasses for a toast during a dinner at the Charlottenburg palace in Berlin Wednesday, June 19, 2013. (AP Photo/Michael Sohn, pool)

  • US President Barack Obama takes off his jacket due to warm weather while he delivers a speech in front of Brandenburg Gate in Berlin Wednesday, June 19, 2013. (AP Photo/Michael Sohn)

  • US President Barack Obama, left, is welcomed by German Chancellor Angela Merkel, right, at the chancellery in Berlin Wednesday, June 19, 2013. (AP Photo/Michael Sohn)

  • US President Barack Obama, left, and German Chancellor Angela Merkel, right, chat during a dinner at the Charlottenburg palace in Berlin Wednesday, June 19, 2013. (AP Photo/Michael Sohn, pool)

  • US President Barack Obama, left, and German Chancellor Angela Merkel leave the stage after Obama delivered a speech in front of Brandenburg Gate in Berlin Wednesday, June 19, 2013. (AP Photo/Markus Schreiber)

  • US President Barack Obama, 2nd left, First Lady Michelle Obama, left, German chancellor Angela Merkel, second right and her husband Joachim Sauer, right, arrive to the Dinner at Charlottenburg Palace in Berlin, Germany, Wednesday, June 19, 2013. (AP Photo/Jens Meyer)

  • German chancellor Angela Merkel smiles besides US President Barack Obama prior their Dinner at Orangerie Charlottenburg Palace in Berlin, Germany, Wednesday, June 19, 2013. (AP Photo/Jens Meyer)

  • President Barack Obama gives a thumbs up after arriving with German Chancellor Angela Merkel to speaks at the Brandenburg Gate in Berlin, Wednesday, June 19, 2013. (AP Photo/Evan Vucci)

  • US First Lady, Michelle Obama, right, and German Chancellor Angela Merkel, left, chat during a dinner at the Charlottenburg palace in Berlin Wednesday, June 19, 2013. (AP Photo/Michael Sohn, pool)

  • U.S. President Barack Obama, right, shakes hands with German Chancellor Angela Merkel after a news conference at the German Chancellery on Wednesday, June 19, 2013, in Berlin. (AP Photo/Evan Vucci)