A knife-wielding, overweight Hispanic sex offender dropped dead while raping a 77-year-old Texan woman

Isabel Chavelo Gutierrez broke off his attack to complain that he wasn't feeling well — then keeled over. The victim ran from the house, and by the time police arrived, Gutierrez, 53, was dead. Investigators believe that he died of a heart attack. He had ridden two miles by bike to reach the home of his victim, whom he had apparently picked out the previous day at a local post office. He was on parole at the time of the attack for crimes including sex assault on a 7-year-old child.