The bomb went off at the premises of the Syndicalist Forum at 10 PM on November 11th 2016. Prosecutor Mats Ljungqvist told news agency TT that it was "pure luck that no one was injured or even killed".
The man who is suspected of the crime is a long-time leader of the Nordic Resistance Movement, reports newspaper GT. It is a violent Neo-Nazi organisation that has been involved in numerous attacks on anti-racists, including a demonstration in the Stockholm suburb of Kärrtorp.
The Swedish Security Police, Säpo, and the prosecutor unit that handles security cases have been involved, said Mats Ljungqvist. He would not say whether there are other suspects.