Mayhew's neighbors in West Jordan described him as friendly and helpful. Darryl Lehmitz, a local bishop of The Church of Jesus Christ of Latter-day Saints, said Mayhew had grown up in the area and moved back about a year ago to live with his mother.
Elisha Palmer said Mayhew had been nice to the kids in the neighborhood and helped his neighbors with a sprinkler project.
"He was a nice neighbor," Palmer said. "I knew he had a past, but we never talked about it."
The bomb threats began directly in front of the KUTV studios at 299 S. Main. The station reported the man called the newsroom and told them he had a detonator and a bomb strapped to his chest. One witness said at first no one took him seriously.
"He had a wire hanging out of his backpack and a trigger on it, but then he tells me not to worry," said Mark Browarsky, who was at the station when the man approached him. "You know, the guy was not making any sense, babbling. We just walked away, and I immediately called 911."
When police arrived at the TRAX station, they cleared everyone from the platform. Mayhew claimed his backpack was full of explosives.
Police were negotiating with him until about 10:50 p.m., when he stopped talking with officers.
"Approximately five minutes later, he started walking toward officers, who commanded him to stop," according to a police report. "Fearing for their lives and given the credible threat of an explosive device, an officer fired one shot, striking the suspect."
Medical personnel did not immediately attend to the man until police robots were able to move in and remove the backpack. McGowan said the backpack was "disrupted" by the robots and its contents were gathered by police for examination.
In 2009, Mayhew was charged with breaking into a home and assaulting a man. Mayhew claimed he had heard a woman in distress and came to her aid. Those charges were dismissed after the home's owner failed to appear in court to testify.
In August, Mayhew filed a civil lawsuit against the state of Utah, claiming the criminal charges against him had caused him to develop post-traumatic stress disorder, interfered with his ability to find work and led to his bankruptcy. In 2012, Mayhew also filed civil lawsuits against South Salt Lake, West Jordan, the United States and plasma collection company CSL Behring.
On an online blogging profile that appears to be written by Mayhew, he described himself as a "notorious" member of a Japanese organized crime organization, a leading expert on crime and crime prevention, a former hit man and a criminal contractor. He also appears to boast of his previous run-ins with the law, writing that he has been incarcerated more than 35 times and charged with dozens of violent crimes but never linked to a homicide or sentenced to a U.S. prison.
"I prevent violent crimes from bleeding off into the civil world," says a quote in his online bio. "Let the Criminal Underworld be my domain for the Criminal Code is my Holy Bible."
Contributing: Jed Boal and Andrew Wittenberg
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