"Don't move, or I will sacrifice you," Julio Cesar Jasso, 27, yelled while holding a gun on the summit of the Moon Pyramid at the Teotihuacan archaeological site on 20/4, according to a video filmed by tourists and released by US media on 21/4.

Dozens of tourists on the pyramid's peak panicked and ducked for cover, while others began running down the stairs. Jasso fired at the group, simultaneously threatening those trapped on the summit.

Suspect Jasso fired shots and threatened tourists on the Moon Pyramid at the Teotihuacan archaeological site, Mexico, 20/4. Video: X/Brandon

One Canadian tourist died, and 13 people were injured in the shooting. Many sustained injuries from falls while attempting to escape. "I saw a man jump down, trying to escape, but he fell and hit his back on the ground. It was truly horrific," recalled Brenda Lee, a Canadian tourist.

Jasso subsequently committed suicide as security forces approached. Police found a knife, a gun, and ammunition at the scene, confirming Jasso as the sole suspect in the attack.

The Moon Pyramid, standing 42 meters tall, is part of the Teotihuacan Pyramid Complex, a UNESCO World Heritage site. This massive complex, located on the edge of Mexico City, was built by three distinct ancient civilizations and is one of Mexico's most important tourist attractions.

Residents who once lived in Teotihuacan believed this was the origin of time, where gods sacrificed themselves to create the Sun, Moon, and establish their orbits.

The Moon Pyramid (left) and the Sun Pyramid (far right) at the Teotihuacan archaeological site, Mexico. Photo: AP

Archaeologists have unearthed skeletal remains with hands seemingly tied behind their backs, decapitated, or stabbed at the pyramid, providing evidence of past human sacrifices. Most victims were brought to the pyramid for sacrifice from distant regions of Mesoamerica.

"Ancient residents here believed that human sacrifice helped maintain the cycles of creation and repay debts to the gods. Humans were contributing to the sun's continued rising," stated David Carballo, an archaeologist at Boston University who participated in excavating part of the pyramid.

However, human sacrifices at the Moon Pyramid occurred about 1,500 years ago, centuries before the Aztecs settled in Teotihuacan around 1300, Carballo noted.

A local guide reported that officials previously conducted security checks for tourists at the site, but this measure was later discontinued. Mexico's National Institute of Anthropology and History announced the archaeological site would close after the shooting until further notice.

Duc Trung (According to AP, NY Post, FOX News)