A mentally disabled man died Thursday apparently due to heatstroke or heat exhaustion after being left in a service vehicle at a welfare facility in eastern Japan for about six hours in hot weather, police said.Welfare facility staff likely forgot to help the 19-year-old man out of the van when assisting four other facility users in leaving the vehicle around 9 a.m. Thursday in Ageo, Saitama Prefecture, the police said.The police said the man was found collapsed unconscious in the back of the van, which had three rows of seats and was parked near the welfare facility Cosmos Earth, around 3:…READ FULL ARTICLE