  Authorities were called to the plant on Wednesday along with the bomb squad, who sealed off parts of the plant when they detected the explosive material. Security detected the material during what was described by CNN as a "routine" security check . Police believe it was on one of the man's hands when it rubbed off onto the bag, but no bomb was found on the premises after an extensive search.
<coherence>   Authorities were called to the plant on Wednesday along with the bomb squad, who sealed off parts of the plant when they detected the explosive material. Security detected the material during what was described by CNN as a "routine" security check . Police believe it was on one of the man's hands when it rubbed off onto the bag, but no bomb was found on the premises after an extensive search.
 Authorities were called to the plant on Wednesday along with the bomb squad, who sealed off parts of the plant . Police believe it was on one of the man's hands when it rubbed off onto the bag, but no bomb was found on the premises after an extensive search.