Teotihuacán Gunman Carried Material Related To A U.S. Mass Shooting

MEXICO – The gunman who opened fire atop Mexico’s ancient pyramid of the moon appeared to have been influenced by other violent shootings, and showed signs of psychological problems.

New details on the case were revealed in a press conference held by Mexican officials today.

Officials say 27-year-old Julio César Jasso Ramírez carried a handgun, dozens of cartridges, a knife, and literature referencing acts of violence.

Mexico’s top prosecutor said Jasso Ramírez planned and carried out the attack alone.

The gunman fatally shot himself after a standoff with police.