BERLIN (AFP) - German Development Minister Dirk Niebel arrived in Afghanistan Sunday for talks on continued aid tied to progress on political reforms, his ministry said. Niebel, who arrived with EU development commissioner Andris Piebalgs, was to meet President Karzai and Finance Minister Omar Zakhilwal, the development ministry said in a statement. Germany had divided its payment of development aid to Afghanistan this year into two tranches to create an incentive for reform programmes including measures to fight corruption. "During the meeting (with Zakhilwal), they will discuss which conditions must be fulfilled so the German development ministry can pay out the remaining second tranche amounting to $157m," the ministry said.