Germany’s “firewall against the far-Right” could crumble after the frontrunner to win next month’s election said he could work with Alternative for Germany (AfD) to tighten immigration laws.

German politicians reacted with shock on Friday after opposition leader Friedrich Merz opened the door to cooperation with the far-right Alternative for Germany (AfD) on migration reform after an Afghan was held in connection with a deadly knife attack.

Germany's conservative opposition faced criticism Friday over reports that it was willing to accept the support of the far-right AfD party in a parliamentary vote on toughening migration rules.

A clear majority of Germans support the conservative Christian Democratic Union (CDU) party's refusal to cooperate with the far-right Alternative for Germany (AfD), a survey showed on Friday. The Politbarometer study,