Я тут правда нашел какие-то другие данные.

The riots were touched off by the police killing of a 69-year-old Portuguese immigrant, who moved to Sweden over 30 years ago and whose name has not yet been made public.
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According to an interview in Swedish tabloid Aftonbladet with Risto Kajanto, the deceased man’s brother-in-law, the man and his wife had been out eating at a restaurant and were confronted by a gang of youths on their way home. The man went back to his apartment and reportedly went onto his balcony and waved a knife at the youths, who left after a while.

At some point later, the police arrived, and the couple, believing they were the gang of youth, refused to open their door. Although the wife reportedly told police that she was not in danger, they nevertheless stormed the apartment, shooting and killing her husband in front of her.
http://www.wsws.org/en/articles/2013/05/25/stoc-m25.html