for the record, this is what I found on that story
TALLINN, Estonia (AP) — A Finnish court on Friday jailed 23-year-old twin brothers from Iraq for four months pending trial on suspicions they were Islamic State militants who fatally shot 11 unarmed soldiers in Iraq in June 2014.
so this happened in Iraq over a year ago. But yeah, it's all the damned refugees
Let's say .1% of refugees in Europe are terrorists/sympathetic to them, there have been about a million or so refugees that have entered. Europe will have already let in at least a 1000 terrorists.