Yup they are already in coverup mode. News Stories are even being edited.
http://www.timebomb2000.com/vb/showthread.php?t=170283
Sgt. Gary Robinson said he could not say whether officials believed any act of terrorism was indicated.
"I have no information on whether it is or isn’t," Robinson said.
"Right now we do know there was a device that exploded. We don’t know what the device is, what the make of the device is, what compound was used. We do know we have at least one fatality. We don’t know the gender of the person.
http://www.dfw.com/mld/dfw/news/nation/12794968.htm