MATAGORDA, TX --The body of a Houston-area man who suffered from dementia has been found more than 100 miles from home in a death blamed on the hot weather. The Matagorda County Sheriff's Office said Thursday that it appears 77-year-old Albert Jones of Pasadena died of exposure. Relatives last saw Jones on Saturday. His abandoned car was discovered Sunday in Matagorda. Capt. Richard Rooth says the body was found Wednesday night by some teenagers walking across a field overgrown with weeds. The site is about four blocks from where the man's vehicle was found. Investigators say there were no signs of foul play. An autopsy has been ordered. The National Weather Service says temperatures have topped 90 degrees in the area this week.