Chai Soua Vang, of St. Paul, Minn., is a 36-year-old truck driver charged with six counts of first-degree murder and three counts of attempted murder in the shootings that erupted after the hunters confronted him for trespassing in a tree stand.

On Saturday, attorneys gave opening statements and four law enforcement officials testified in a courtroom packed with nearly 100 people, most of them relatives or friends of the victims from nearby Rice Lake.

Vang faces mandatory life in prison if convicted. Wisconsin does not have the death penalty.