A fifth British teenager has been found guilty of unlawfully killing Birmingham schoolboy Keon Lincoln after buying weapons used in the killing, including a hunting knife found in a getaway car. Kieron Donaldson was cleared of murder but convicted of manslaughter by a majority 10-2 verdict on Friday, a day after four other defendants were found guilty of murder. Jurors had been instructed to consider whether Donaldson, aged 18, had assisted or encouraged one of 15-year-old Keon’s attackers to carry out the attack. The panel, which deliberated for more than 17 hours at Birmingham Crown Court, was told that Donaldson was guilty of manslaughter if they could not be sure he intended the attackers to cause really serious harm to Keon. Donaldson was remanded in custody and will be sentenced on November 29 alongside a 14-year-old gunman, a 16-year-old youth from Walsall, and 18-year-olds Tahjgeem Breakenridge and Michael Ugochukwu. A …