reporter: stephan e. has a criminal record that includes hate crimes.ut he was not on authority's radar. it is not clear to what extent he had maintained contact with right-wing extremist groups. >> i will say it again. the investigation of this political killing is not concluded with the suspect's confession. reporter: the motive for the shooting death of this politician could date back to 2015, when large groups of refugees were arriving in germany. during a local event to discuss a planned refugee shelter, lubcke had said germans who do not value coexistence could leave the country if they wished. stephan e. claims it was this statement that spurred him to kill walter lubcke. brent: it is hot here in europe. a record-breaking heat wave is making life miserable from millions of people across the continent. authorities in paris have banded 60% -- have banned 60% of cars to the city to mitigate the buildup of dangerous levels of smog in the ozone. record highs are expected in spain's northeast and in the capital madrid. and here in berlin it was a recor