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 suspect appeared to have been planning to kill Jews for several weeks, apparently motivated by the Middle East conflict, which is why he chose the location, the prosecutors said.

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.