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Federal investigators are now looking for answers in a series of deaths and disappearances involving scientists tied to sensitive U.S. research
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The FBI says it is now spearheading efforts to determine whether any of the cases are connected
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The mysteries span several years and involve people linked to nuclear, aerospace, and defense work
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Some are homicides. Others are missing persons cases with no clear signs of foul play
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Many had ties to places like NASA's Jet Propulsion Laboratory and Los Alamos National Laboratory
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Among them, a retired Air Force general who disappeared from his home in Albuquerque, New Mexico
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William Neal McCasland has not been seen since February, since going out for a walk in the foothills of the Sandia Mountains
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Another case, Stephen Garcia, also missing in Albuquerque, New Mexico. Authorities say that investigation is still active
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President Trump said last week he's been briefed and expects more answers soon
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Online speculation has focused on whether the cases are connected, including theories about foreign involvement
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Lawmakers are now seeking briefings, calling the situation a potential national security concern
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But investigators and experts say there's no evidence linking the cases. In a statement on X, a NASA spokesperson said, quote
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nothing related to NASA indicates a national security threat. For now, investigators are
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working case by case, trying to determine whether any of these incidents are connected or not
