A UC Irvine professor accused of plotting mass murder at a local high school after his teenage son committed suicide was upset with the handling of the case, a colleague said.
Acquaintances say Reinscheid had been furious at University High School for how it handled his son's death.
"He was angry and unsatisfied with the investigation into his son's death," said Bruce Blumberg, a professor in Reinscheid's department at UC Irvine. Blumberg described 14-year-old Claas Stubbe as "a sweet and sensitive boy."
The case began last week when Reinscheid was arrested on charges of trying to light a fire in Mason Park Preserve with newspaper and lighter fluid. It was not far from the wooded spot where his son had hanged himself four months earlier.
Reinscheid, who teaches in the pharmaceutical science department, posted bail and was released that day.
But when police examined his cellphone three days later, they found something they described as much more sinister: emails in which he allegedly spoke of committing mass murder at University High School, the campus his son had attended.
In the emails, Reinscheid allegedly had planned to obtain firearms to murder students and administrators, commit sexual assault, burn down the school and then kill himself, said Farrah Emami, spokeswoman for the Orange County district attorney's office.
"We did take these emails very seriously," Emami said.
The professor was arrested again and is now being held without bail at the request of prosecutors.
Police in Irvine, which frequently touts itself as the nation's safest city of its size, say they did not uncover evidence that he had actually put any such murder plot into motion.
"We did not find diagrams and stores of weapons, but he articulated in very concerning language the desire to harm all those people," said Lt. Julia Engen, spokeswoman for the Irvine Police Department. "We have to presume that that's what he wanted to do."
This story was reported by Times Staff Writers Christopher Goffard and Kate Mather.