German authorities said a Syrian suspect was intending “to kill Jews” when he stabbed a tourist in Berlin on Friday, the latest in a string of attacks by refugees and asylum seekers ahead of a crucial election on Sunday.

The police said they had detained a suspect in the assault, which occurred among the labyrinth of concrete slabs at one of the German capital’s most sacrosanct sites.

Authorities in Berlin have detained a teenage Syrian refugee after a man was stabbed near the city’s Holocaust Memorial late Friday – as divisive rhetoric swells over Germany’s immigration policy, ahead of a consequential national election.