Eight people were detained on suspicion of being involved in terrorism-related activities as a result of searches in seven houses in the German city of Oberhausen, North Rhine-Westphalia, earlier on Wednesday, the Bild newspaper reported, citing police.
The security services suspect that members of the detained family are part of a terrorist cell, according to the Bild newspaper. However, the detainees were released a few hours later.
Since investigators could not rule out that the suspects were armed, two apartments were stormed by police special forces. In total, 150 police officers participated in the operation, searching for evidence, weapons and explosives.