Berlin (dpa) - The security authorities in Germany have prevented according to information from BKA boss Holger Münch since the attack on the Berlin Breitscheidplatz seven attacks. Today, an act such as that of Anis Amri in December 2016 can no longer happen, he told the "Rheinische Post". The number of Islamist perpetrators has increased more than fivefold since 2013 - to around 680 today, Münch said. Threats from the right in the network described Münch as "endangering democracy". At the same time he announced a "center for hate crime in the network".