German police have searched a mosque and eight apartments in Hildesheim that are believed to be a hotbed of a radical Salafist community, the interior minister of the northern state of Lower Saxony said on Thursday.
Germany is on high alert after a spate of attacks since July 18 left 15 people dead - including four attackers - and dozens injured. Two assailants, a Syrian asylum seeker and a refugee from either Pakistan or Afghanistan, had links to Islamist militancy, officials say.
Interior Minister Boris Pistorius said in a statement that up to 400 police - including mobile squads and a special forces police commando - were involved in the raids on Wednesday in the Hildesheim area, which is a short drive south of Hanover.
"The German-speaking Islamic circle (DIK) in Hildesheim is a nationwide hot-spot of the radical Salafist scene that Lower Saxony security authorities have been monitoring for a long time," the state official said.