Gas blast rocks Kansas City shopping district

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, Feb. 19, 2013.

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, Feb. 19, 2013.

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, Feb. 19, 2013.

Mulitple injuries in Kansas City explosion

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, Feb. 19, 2013.

Firefighters douse a burning building at the scene of a gas explosion and massive fire, Feb. 19, 2013, at the Country Club Plaza in Kansas City, Mo.

Firemen and utility workers inspect a building that exploded and caught fire in the Plaza shopping district of Kansas City, Mo., Feb. 19, 2013.

Firemen and utility workers respond to a gas explosion and massive fire, Feb. 19, 2013, in the Plaza shopping district in Kansas City, Mo.

Firemen and utility workers respond to a gas explosion and massive fire, Feb. 19, 2013, in the Plaza shopping district in Kansas City, Mo.