Lonta Burress Jr. had been expected to plead guilty on Monday in a murder case, but he said he had decided to reject the state's offer.
Burress is already serving a six-year sentence after a Criminal Court jury in July 2012 found him and Darius Gustus guilty as charged in a Dec. 7, 2010, school bus stop shooting.
The multiple convictions in the school bus case came despite the fact that one witness changed his story and another who was in a stolen truck with the pair at the time of the shooting said she "could not recall" what happened.
They were charged with firing multiple shots at high school students who had just gotten off a school bus.
The murder of Darius Townsend came six months after the school bus stop gunfire while Burress was out on bond.
The murder case had been set to go to trial before Judge Don Poole on Oct. 29. Prosecutor Cameron Williams said he had not subpoenaed witnesses for that date because he had understood there was to be a guilty plea.
A new trial date was set for Nov. 12.
Burress is now 19.
Townsend, a 17-year-old Brainerd High School student, was gunned down on Taylor Street on June 1, 2011.