The trial is starting for a man charged with killing a teenager during a robbery in Madbury, New Hampshire, last year.
Prosecutors say 19-year-old Tristan Wolusky of Rochester and two others drove to 18-year-old Aaron Wilkinson's home with plans to steal money and drugs.
Wilkinson was stabbed to death. His body was left on the side of a road in Lebanon, Maine.
Wolusky pleaded not guilty. The others, 19-year-old Zachary Pinette of Springvale, Maine, and 22-year-old Michael Tatum of Barrington, New Hampshire, have pleaded guilty to second-degree murder and are expected to testify against Wolusky as part of a plea agreement.