German authorities have increased security measures in response to intelligence indicating the possibility of terrorist attacks, similar to that before the September 11, 2001 attacks on the United States.
Interior Minister Wolfgang Schauble Friday said there is a serious threat of suicide attacks on German soil. Other officials identified the threat as coming from terrorist groups in Afghanistan. An Interior Ministry spokesman says terrorist training there has become stronger and groups in Afghanistan are ready for action in the region and abroad.
The head of Germany's federal crime office, Joerg Ziercke, said authorities had also obtained a video that contained threats against Germany. He said authorities in Pakistan had arrested three Germans in connection with the video.
The three are believed to be part of a group of 10 people who trained to carry out suicide bombings.
Some information for this report provided by AP and Reuters.