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.

Police arrested a man suspected in a stabbing attack Friday at Berlin’s Holocaust Memorial that left a Spanish tourist seriously injured, police said. There was no immediate indication of a motive for the attack,

German police arrested a suspect in the stabbing on Friday evening at Berlin's Holocaust memorial that seriously injured a man two days before a watershed national election.