all right. more now on that power plant explosion in connecticut. it happened this morning at the kleen energy power plant in middletown. there are conflicting reports on possible deaths. police originally said there were two fatalities, but now say that cannot be confirmed. but the mayor of middletown confirms that there are multiple casualties. nearly a dozen people have been sent to area hospitals. cnn's susan candiotti is at the scene. susan, what more do we know about the accident that took place and how many may be injured? >> reporter: well, in fact officials tell me that there are definitely casualties on the scene, but they just don't have any hard numbers yet. you already talked about a number of people having been injured as well. we do know that there are about 50 construction workers onsite at the time when they were purging a gas line at the plant.