What do you imply exactly? So Swedish police are more likely to suspect you if you are a foreigner, how unexpected.
I wish the authors had included a link to that study so we could see what "suspected of" means exactly.
It means someone was suspected (e.g. were at any time a suspect during the investigation), regardless of whether they actually committed anything or not.
Ok then.
I'd be surprised if it was different in Sweden, or any other country with similar problems, as it's easy to distinguish the looks of most immigrants and the local population.
It's not. To take Germany as an example, the largest group of foreigners are Turks, followed by Poles and Italians. More than half of foreigner's in Germany are from European countries. On the other hand, many people from that groups are now German citizens and have grand-children that are in Germany in the third generation. A large number of German citizens have foreign born parents and many foreigners are born in Germany. If you can reliably distinguish between immigrants and the rest of the population by the looks your skills would be in high demand.
See https://www.destatis.de/EN/FactsFigures/SocietyState/Populat... for detailed statistics.