Herrera, whose age was not given, leaves behind a wife and four children.
“The Lincoln Police Department is devastated by the loss of one of our most outstanding police officers. Mario was an exceptional investigator, a selfless teammate, and a tireless public servant,” the post said. “Empathetic, kind, and utterly committed to serving victims and protecting his community, Mario was an exemplary human being who just happened to be a Lincoln police officer.”
In a separate post, the police department said a procession involving several agencies would bring Herrera back to Lincoln from Omaha, where he had been treated, Monday afternoon.