A Woodbury man shot and killed his two children before setting fire to his recreational vehicle and then killing himself, authorities in Arizona said Thursday.

Investigators confirmed that the shooter was Anthony DeHaven, 35, and said he killed his children, 11-year-old son Jace and 5-year-old daughter Jersey, who were students at Skyview School in Oakdale.

The deaths were discovered Oct. 3 as the vehicle burned at a gate to the South Rim of the Grand Canyon.

Shannan Marzak, a National Park Service spokeswoman, said an investigation by her agency and several others, including the FBI, continues. It has been a difficult process, complicated by the extensive fire damage. No other details were released.

The double murder-suicide was the second tragedy involving students at the school in recent weeks. On Sept. 15, a 6-year-old Skyview student found her parents dead at home. Her mother, Cintia Guadalupe Ornelas Bustos, 28, and baby sitter, Angela Uscanga Gonzalez, had been shot. Her father, Jaime Anival Almaras Velasquez, 32, committed suicide.