Grim details emerged Thursday about the massacre at a California holiday party that left 14 people dead and 21 others hurt, but investigators are still trying to answer the key question: Why?<br />The couple who unleashed the bloodbath Wednesday fired as many as 75 rounds at the Inland Regional Center in San Bernardino and tried to slaughter more with a rigged pipe bomb that never detonated, authorities said Thursday.<br />Authorities said they are still trying to determine why Farook and his wife attacked the Inland Regional Center.<br />"There was obviously a mission here," Bowdich said.<br />"We do not know why.<br />We do not know if this was the intended target or something triggered him."<br />But authorities told NBC News on Thursday that Farook appeared to have been radicalized.<br />They said he had been in touch with people in the Los Angeles area who have expressed jihadi-oriented views.
