7h 32min, jul 29, 1999 y - Mark Barton Killing Spree
Description:
Mark Orrin Barton shot up All-Tech investment group and Momentum Security INC. in the early hours of Jult 1999. He killed 9 of his former coworkers and injured 13. Just two days before, however, he murdered his wife and two kids with a hammer. A manhunt ensued for 9 hours before he killed himself. His motives seemed to be financial issues.
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