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Officials inspect a burned out JJ's Restaurant at the Plaza shopping district of Kansas City, Mo., Wednesday, Feb. 20, 2013. Search crews at the site of the massive explosion that destroyed the restaurant, recovered one body Wednesday, and the city's mayor said there was no certainty the rubble wasn't concealing other victims. Mayor Sly James declined to say whether the body belonged to a man or a woman, though authorities have been looking for a woman who worked at JJ's restaurant and was seen there before the Tuesday evening blast and reported missing afterward. A natural gas leak turned into an explosion that leveled the building on Tuesday evening. (AP Photo/Orlin Wagner)

Kansas City Missouri firefighters look through the rubble of JJ's restaurant after an explosion and fire tore through the establishment Tuesday evening near the Country Club Plaza Wednesday, Feb. 20, 2013, in Kansas City, Mo. The fire killed one person and injuring over a dozen. (AP Photo/Ed Zurga)

A Kansas City Missouri firefighters walks through the rubble of JJ's restaurant after an explosion and fire tore through the establishment Tuesday evening near the Country Club Plaza Wednesday, Feb. 20, 2013, in Kansas City, Mo. One person was killed and injuring over a dozen. (AP Photo/Ed Zurga)

Officials inspect a burned out JJ's Restaurant at the Plaza shopping district of Kansas City, Mo., Wednesday, Feb. 20, 2013. Search crews at the site of the massive explosion that destroyed the restaurant, recovered one body Wednesday, and the city's mayor said there was no certainty the rubble wasn't concealing other victims. Mayor Sly James declined to say whether the body belonged to a man or a woman, though authorities have been looking for a woman who worked at JJ's restaurant and was seen there before the Tuesday evening blast and reported missing afterward. A natural gas leak turned into an explosion that leveled the building on Tuesday evening. (AP Photo/Orlin Wagner)

Smoke rises from a massive fire Tuesday night, Feb. 19, 2013 at the Country Club Plaza in Kansas City, Mo. A car crashed into a gas main in an upscale Kansas City shopping district, sparking a massive blaze that engulfed an entire block and caused multiple injuries, police said. (AP Photo/The Kansas City Star, Allison Long)

Firefighters douse a burning building at the scene of a gas explosion and massive fire Tuesday night, Feb. 19, 2013 at the Country Club Plaza in Kansas City, Mo. A car crashed into a gas main in the upscale Kansas City shopping district, sparking a massive blaze that engulfed an entire block and caused multiple injuries, police said. (AP Photo/Orlin Wagner)

Firefighters are on the scene of a gas explosion and massive fire Tuesday night, Feb. 19, 2013 at JJ's restaurant at the Country Club Plaza in Kansas City, Mo. A car crashed into a gas main in the upscale Kansas City shopping district, sparking a massive blaze that engulfed an entire block and caused multiple injuries, police said. (AP Photo/The Kansas City Star, Tammy Ljungblad)

A still image taken from a KHSB-TV video footage shows aerial of the flames and firefighters working at the scene of a fire at Kansas City, Missouri February 19, 2013. A fire triggered by a natural gas explosion that appeared to have originated underground engulfed a restaurant in Kansas City, Missouri, on Tuesday, injuring more than a dozen people, authorities and witnesses said. REUTERS/KHSB-TV

Firemen and utility workers respond to a gas explosion and massive fire Tuesday night, Feb. 19, 2013 in the Plaza shopping district in Kansas City, Mo. A car crashed into a gas main in the upscale shopping district, sparking a massive blaze that engulfed an entire block and caused multiple injuries, police said. (AP Photo/Ed Zurga)

Fire and smoke rise at an upscale shopping district in Kansas City, Mo., where a city official said a gas explosion sparked a block-engulfing blaze, Tuesday evening, Feb. 19, 2013. (AP Photo/The Kansas City Star, Keith Myers)

Emergency personnel wheel an injured victim from the scene of a gas explosion and massive fire Tuesday night, Feb. 19, 2013 at the Country Club Plaza in Kansas City, Mo. A car crashed into a gas main in the upscale Kansas City shopping district, sparking a massive blaze that engulfed an entire block and caused multiple injuries, police said. (AP Photo/The Kansas City Star, Tammy Ljungblad)

A still image taken from a KHSB-TV video footage shows aerial of the flames and firefighters working at the scene of a fire at Kansas City, Missouri February 19, 2013. A fire triggered by a natural gas explosion that appeared to have originated underground engulfed a restaurant in Kansas City, Missouri, on Tuesday, injuring more than a dozen people, authorities and witnesses said. REUTERS/KHSB-TV

A still image taken from a KHSB-TV video footage shows emergency workers pulling a person on a gurney near the scene of the fire at Kansas City, Missouri February 19, 2013. A fire triggered by a natural gas explosion that appeared to have originated underground engulfed a restaurant in Kansas City, Missouri, on Tuesday, injuring more than a dozen people, authorities and witnesses said. REUTERS/KHSB-TV

A still image taken from a KHSB-TV video footage shows fire engines and emergency officials near the scene of the fire at Kansas City, Missouri February 19, 2013. A fire triggered by a natural gas explosion that appeared to have originated underground engulfed a restaurant in Kansas City, Missouri, on Tuesday, injuring more than a dozen people, authorities and witnesses said. REUTERS/KHSB-TV

A still image taken from a KHSB-TV video footage shows aerial of the building with flames at Kansas City, Missouri February 19, 2013. A fire triggered by a natural gas explosion that appeared to have originated underground engulfed a restaurant in Kansas City, Missouri, on Tuesday, injuring more than a dozen people, authorities and witnesses said. REUTERS/KHSB-TV

A still image taken from a KHSB-TV video footage shows aerial of the flames and firefighters working at the scene of a fire at Kansas City, Missouri February 19, 2013. A fire triggered by a natural gas explosion that appeared to have originated underground engulfed a restaurant in Kansas City, Missouri, on Tuesday, injuring more than a dozen people, authorities and witnesses said. REUTERS/KHSB-TV

Firemen and utility workers respond to a gas explosion and massive fire Tuesday night, Feb. 19, 2013 in the Plaza shopping district in Kansas City, Mo. A car crashed into a gas main in the upscale shopping district, sparking a massive blaze that engulfed an entire block and caused multiple injuries, police said (AP Photo/Ed Zurga)

A still image taken from a KHSB-TV video footage shows aerial of the flames and firefighters working at the scene of a fire at Kansas City, Missouri February 19, 2013. A fire triggered by a natural gas explosion that appeared to have originated underground engulfed a restaurant in Kansas City, Missouri, on Tuesday, injuring more than a dozen people, authorities and witnesses said. REUTERS/KHSB-TV