ELKHART COUNTY, Ind. -

Testimony begins this morning in the murder trial of Todd Stewart. He's charged with killing his best friend, putting the body in a barrel and throwing it into the St. Joseph River.

Mark Miller's sister reported him missing in September of 2012. Ten days later police found his body near the Six Span Bridge.

Stewart worked at Miller's tattoo business in Elkhart.

Prosecutors say a "business associate" of the two men told police he saw Stewart kill Miller behind the tattoo shop.