A Missouri judge on Tuesday overturned the conviction of a man who has served nearly 28 years of a life sentence for a killing that he has always said he didn't commit. Lamar Johnson, 50, closed his eyes and shook his head slightly as a woman on his legal team patted him on the back when Circuit Judge David Mason issued his ruling. A court official said after the hearing that Johnson would be “processed out” but should be available soon outside of the courthouse. St. Louis Circuit Attorney Kim Gardner filed a motion in August seeking Johnson's release, prompting a hearing in December before Mason. The Missouri attorney general’s office argued at the December hearing that Johnson should remain in prison. Johnson was convicted of murder for the 1994 fatal shooting of Marcus Boyd. Police and prosecutors blamed the killing on a dispute over drug money. From the outset, Johnson maintained his innocence, saying he was with his girlfriend miles (kilometers) away when the crime occurred. Gardner said an investigation conducted by her office with help from the Innocence Project convinced her that Johnson was telling the truth. Dwight Warren, who prosecuted Johnson in 1995, said that beyond Elking’s testimony, the main evidence against Johnson was an overheard jail cell conversation. In March 2021, the Missouri Supreme Court denied Johnson’s request for a new trial after then-Attorney General Eric Schmitt’s office argued successfully that Gardner lacked the authority to seek one so many years after the case was adjudicated. The case led to the passage of a state law that makes it easier for prosecutors to get new hearings in cases where there is fresh evidence of a wrongful conviction. That law freed another longtime inmate, Kevin Strickland, last year. He had served more than 40 years for a Kansas City triple killing.