U.S. Customs and Border Protection agents arrested an Arizona teenager who was seen on surveillance cameras trying to slip guns and knives through the border wall.

Angel Mullooly was in court on Tuesday, where he made the change of plea after he was originally facing trial for second-degree murder.

Officials with the Maricopa County Sheriff's Office say deputies were first called to a home near Dysart and Happy Valley roads for reports of a shots fired call.