The suspect who killed a man with a knife in a Hamburg supermarket was a known Islamist with psychological problems but his motives remain unclear, German officials said Saturday. Identified as a 26-year-old Palestinian, he arrived in Germany in 2015 from Norway but was due to be deported as his application for asylum was rejected. Friday's assault risks reopening a bitter debate over refugees two months before general elections, putting pressure on Chancellor Angela Merkel over her decision to open Germany's borders in 2015 and let in more than a million asylum seekers.



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