New disturbing details continue to arrive on the attack in New Orleans while investigators continue their investigations into the dynamics of the massacre that killed 14 people. According to NBC News sources, the killer, Shamsud-Din Jabbar, would have used a very rare explosive compound in the two homemade bombs that did not explode, a material that would never have been used in a terrorist attack or incident in the United States, nor in Europe , the sources said, wondering how the attacker came to know about that compound and how he managed to produce it. Neither of the two homemade devices exploded and it is not yet clear whether the failure was due to a malfunction, lack of activation or another problem. Jabbar had planned to use a transmitter to detonate the two bombs, which had been planted in refrigerators on Bourbon Street. A transmitter and two guns were recovered from Jabbar’s truck and transported to an FBI laboratory for analysis. Jabbar had also burned down a short-term rental house on Mandeville Street in New Orleans, where bomb-making materials were found “in an attempt to destroy it along with other evidence of his crime.”