BERLIN -- Germany will temporarily implement border controls to prepare for the Group of Seven summit in the Bavarian Alps later this month.

The summit of rich nations will be held in Elmau between June 26-28 with leaders from the United States, France and Japan. Germany also announced that it has increased security at its borders from June 13-July 3.

The statement stated that the controls were intended to stop potential perpetrators from violence entering German territory. It also said that travelers should expect to be subjected to inspections during this time.

The interior ministry did not further elaborate what kind of violent threats it might be expecting, but several protests against the summit are planned in the nearby town of Garmisch-Partenkirchen and in Bavaria's capital, Munich, during the leaders' meeting.

Temporary border controls will be "flexible as to location and time" and performed "at the German land-, air- and maritime inner borders", which usually fall under the Schengen treaty of the European Union, which allows for free travel.