Thousands of Albanians went to the streets on Saturday to demand the resignation of Prime Minister Edi Rama.
Demonstrators clashed with the police as they tried to enter the prime minister's office in the capital Tirana.
Four demonstrators and two police officers were injured during the clash, according to the Albanian Ministry of Health and Social Protection.
This was "extraordinarily dangerous and would lead to the region's destabilization," the German minister of state for Europe said on Thursday, Beta agency reported.
In an interview for Deutsche Welle in Albanian, Roth said that "the territorial integrity of the Balkan countries was exceptionally important."