David Matusiewicz had driven from his home in Hidalgo County, Texas, with his father and his mother, Lenore, for Monday's hearing. But he stayed in Elkton, Md., before the hearing instead of with an uncle in Bayville, N.J., as had been approved by parole officers. That discrepancy landed him in court Friday.
Matusiewicz said very little during Friday's brief proceedings, only acknowledging his decision to waive his preliminary and detention hearings. His next court appearance has not been determined.
Earlier on Friday, 6ABC reported that police had found guns and ammunition in the trunk of Matusiewicz's Honda Civic in Maryland.
Also on Friday, Matusiewicz's sister, Amy Gonzalez, released a statement saying that the "Matusiewicz and Gonzalez families are stunned and bewildered" by the killings.
"We want to express our deepest sympathy for all of the victims and their families," the statement said. "We apologize to the people of Delaware for the violent actions of Thomas Matusiewicz. We understand that the police had to do what was necessary to prevent further injuries."
Police searched the Matusiewicz family's house and a storage locker in Texas last week and found 13 guns, hundreds of rounds of ammunition, and books titled Kill All the Lawyers and New I.D. in America, the Associated Press reported.
Attorneys for David and Lenore Matusiewicz declined to comment outside the courthouse Friday.
Contact Chris Palmer at 609-217-8305, cpalmer@phillynews.com, or follow on Twitter, @cs_palmer.
