Teotihuacán Pyramids Shooting: Gunman Carried Notes on U.S. Mass Shootings

Americas|Teotihuacán Gunman Carried Notes Related to Past U.S. Mass Shootings

On Sunday, Julio César Jasso Ramírez checked into a hotel near one of Mexico’s most popular tourist destinations, the Teotihuacán pyramids, Mexican officials said on Tuesday. The next morning, he took an Uber to the archaeological site, climbed up the Pyramid of the Moon, which in ancient times was used as a stage for performing ritual sacrifices, and opened fire.

Mexican officials are still trying to piece together what led Mr. Jasso, 27, to shoot into a crowd of tourists, killing a Canadian woman and wounding several other foreign visitors.

But some details revealed by the authorities on Tuesday point to a troubled man who may have drawn inspiration from the perpetrators of previous massacres in the United States.

“He acquired weapons, knives, backpacks, gloves, goggles — all the equipment he thought would be useful for carrying out his objective,” José Luis Cervantes Martínez, the attorney general of the State of Mexico, said at a news conference.

After security forces responded to emergency calls and set up a perimeter around the Pyramid of the Moon, Mr. Jasso fired down at the soldiers from above. Two Mexican National Guardsmen and a municipal police officer maneuvered to the sides and back of the pyramid “to bravely and riskily climb” the structure, said Guillermo Briseño Lobera, the commander of the National Guard.

As the soldiers and officer reached the gunman on the pyramid’s second tier, he climbed even higher up the steep stone steps. A National Guardsmen then shot him in the leg, Mr. Briseño said, immobilizing him.