Police in the eastern city of Imatra are investigating an assault that took place on Sunday.
In the early hours of March 6, police received a report of a beating on Imatrankoski Market Square.
According to a police statement, "a Finnish couple had argued in a nearby restaurant and when they left the restaurant, three men had begun to beat the man, striking him in the face. All three men suspected of the assault were wearing jackets with Soldiers of Odin logos."
The same men are also suspected of attacking an off-duty security guard who was at the scene.
Police soon apprehended three men in their 20s from the Jyväskylä area. One of them was detained and interrogated about the suspected attack. The other two are also suspected of assault.
According to the Southeastern Finland Police Department blotter, "alcohol is believed to have played a role" in the incident.
The Soldiers of Odin group has been operating street patrols in several cities, purporting to protect Finns from foreign criminals. Many of its members have violent criminal records and ties to neo-Nazi and other far-right groups.