ST. PAUL (AP) --  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.

Police have not released the name or age of the man who was killed.