Eric J. DeValkenaere, 43, was convicted of involuntary manslaughter and armed criminal action. DeValkenaere testified that Lamb pointed a gun at another detective which prompted him to fire his weapon in response. “I’m thinking, ‘I can’t let this happen, I can’t let him shoot Troy,’” DeValkenaere told the court.
Investigators later discovered that the officers staged the scene to make it appear as if Lamb was armed.
Per NBC News:
Another officer who was the first to arrive at the scene after the shooting testified during the trial that he didn’t see a gun on the ground below Lamb’s left arm, which was hanging out of the window of the truck. Later, though, a gun was there in police photographs. […] Two bullets were found in Lamb’s pockets at the morgue, but crime scene technicians didn’t find them at the scene. And prosecutors also raised questions about whether Lamb, who was right-handed, could have used his left hand to pull a gun due to an earlier injury. The defense argued that he could have.
The Kansas City Police Department released a statement following Friday’s verdict: “Every officer involved shooting is difficult not only for the members in the community, but also the members of the police department. We acknowledge the court’s decision.”
Lamb’s mother also spoke with reporters and noted how overwhelming the entire situation has been. “I miss my baby and this just did not have to be,” she said. “It did not have to be. My son was at his home and he was minding his own business when they took it upon themselves to go into the backyard. He was very needed not only to his family, but to the community.”