Posted at: 08/31/2013 11:03 AM
DETROIT (AP) - Media reports say an underground explosion has caused damage in downtown Detroit.
WXYZ-TV reported that authorities said Saturday morning's explosion happened at an underground electrical substation in the central business district.
WWJ-AM, WXYZ and WDIV reported the blasts blew manhole covers into the air.
There were no immediate reports of injuries. A Detroit Police spokeswoman said more information would be released later.
The Associated Press left a message with fire representatives.
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