Germany’s interior minister dramatically announced plans to resign on Sunday night, after a heated showdown with chancellor Angela Merkel over migration.

Horst Seehofer, Germany’s Interior Minister and leader of the Christian Social Union (CSU), said on Sunday evening that he wanted to resign from all offices, after hours of heated talks with his party.

Mr Seehofer said the conflict with Mrs Merkel over migration was affecting the "credibility" of his role as party leader. He also slammed the migration deal Mrs Merkel secured with her EU counterparts last week as “ineffective”.

In the early hours of Monday morning, after talks had dragged on and missed several deadlines, Mr Seehofer said that he would make a final decision after one last conversation with Mrs Merkel.

The meeting on Monday afternoon in Berlin will focus on migration and border control. “We’ll have more talks today with the CDU in Berlin with the hope that we can come to an agreement. After that, then we will see,” he said.

Mr Seehofer has been a fierce critic of Mrs Merkel and in particular her decision to open Germany’s doors to over 1 million migrants in 2015. With that in mind his resignation may be welcome news to the chancellor. However it is yet to be seen who his replacement would be and many in his party share his tough stance on immigration.