15-year-old boy missing from York found safe and well Fri 12 MayCan you help trace the witnesses? Fri 12 May 2017 @ 8:18pm YorkMix NewsPolice thanked everyone for sharing their appeal A teenage boy missing from his York home has been found. Alex McKenna, 15, went missing on Thursday afternoon (May 11). North Yorkshire Police said on Saturday that he had been found safe and well. They thanked everyone for sharing their appeal.