A criminal investigation is ongoing into a Carlsbad man who allegedly communicated with the teenage girl who committed a deadly school shooting in Wisconsin last month, with authorities alleging in court documents that he expressed his own plans to carry out an armed attack against a government building.

A California man apologized Friday for his connection to a 15-year-old girl who fatally shot a teacher and fellow student at a religious school in Wisconsin, telling a judge that he was prepared to accept the consequences of his actions without explaining his precise role.