As we’ve written about before, working at the Central Intelligence Agency can be hazardous, even if you never left Langley. With classified office accidents fairly commonplace, it’s not surprising that the CIA made holiday safety a priority, as evidenced by memos dating back to the Agency’s founding.

The official record on the 2015 death of Mikhail Lesin deems the event an accident, the result of falling and suffering a number of “blunt force injuries” in his hotel room after a days-long alcohol binge. But while others have cast doubt on that account, attributing it to more nefarious external actors, materials released by the Federal Bureau of Investigation don’t contradict the accidental death determination.