ST. PAUL, Minn.— St. Paul police have arrested two people suspected of fatally shooting a man at a festival at Como Regional Park.

The police department said on its official Twitter account Monday morning they arrested 27-year-old Nougai Xiong of St. Paul and 28-year-old Yang Houa Xiong of La Crosse, Wisconsin.

Police say Nougai Xiong is being investigated for second-degree murder and Yang Xiong for aiding and abetting.

The shooting happened Sunday afternoon at the annual Hmong Freedom Festival. Authorities say thousands were at the event.