Mackenzie Swift, 11, dies after entering the River Don in Doncaster, South Yorkshire. Reports say he is last seen entering the river near Mexborough during a period of warmer conditions. After his disappearance, authorities launch a major search operation that lasts around 48 hours. His body is later found three days after he was reported missing. The incidents prompts a coordinated response by search teams while the circumstances leading up to his entry into the water remain under review. The accounts describe a single, consistent timeline: he is seen entering the river, the search begins promptly, and the recovery occurs days later. Separate outlets cover the same event and location, focusing on the heatwave conditions and the scale of the search effort. No additional details about injuries, cause of death, or family statements are provided in the included reports.