czech finance minister andrej babiš said "unfortunately... [angela merkel's open-door migration] policy is responsible for this dreadful act. it was she who let migrants enter germany and the whole of europe in uncontrolled waves, without papers, therefore without knowing who they really are." marcus pretzell, husband of afd leader frauke petry, tweeted: "when will the german state of law strike back? when will this cursed hypocrisy finally stop? these are merkel's dead! #nice #berlin."