FORT WORTH, Texas—Authorities say they are investigating a natural gas explosion at the Fort Worth, Texas, home of megachurch pastor T.D. Jakes. Fort Worth fire spokesman Lt. Kent Worley says the blast Sunday in the sunroom of the home appears to have been an accident. Authorities say no one was injured and there was no fire. The sunroom was heavily damaged. Worley says the room had a gas-fed pool heater and a large gas-fed barbecue grill.