Mexican senator Citlalli Hernandez Mora was working late in her office May 29 when she opened a package containing a thick, red hardback book sent to her as a gift. As she opened the cover of the book, it triggered one of the pipe bombs contained within a hollowed-out compartment inside the weighty tome. Fortunately for the senator, the pipe bomb burst into flames instead of detonating, only burning her lightly and causing some thermal damage to the items on her desk. A video released by Mexican news outlet Milenio featured photos of the scene that showed the book on the senator's desk, revealing that the device hidden inside the book was a pipe bomb constructed from a 1-inch PVC water pipe. It also showed that one of the end caps of the pipe bomb was missing, perhaps indicating it was not well secured.