6 Americans among injured at shooting at tourist hot spot in Mexico

Six Americans were injured Monday when a gunman opened fire at a popular tourist destination in Mexico, the Teotihuacán pyramids. 

The gunman was identified by Mexican authorities as Julio César Jasso Ramírez, according to Fox News. The officials said that Ramirez had visited the pyramids several times "in reconnaissance of the specific locations he intended to utilize for his violent attack." In addition to the Americans injured, 13 others were injured, and one Canadian was killed. 

A tour guide who saw the shooting said that the gunman fired upward.

"Some people, because they were scared ... threw themselves face-down on the ground, and the rest of us started to go down," the tour guide said.

Mexican officials said at a news conference Tuesday that they found in the gunman's backpack "literature, images and handwritten manuscripts, all allegedly related to violent events known to have occurred in the United States in April 1999." They were referring to the Columbine High School shooting, which also took place on April 20, in 1999.

April 20 is also the birthday of Germany’s genocidal Nazi leader Adolf Hitler. Ramirez was also reportedly a Nazi sympathizer who was seen in photos making the Heil Hitler salute, according to the New York Post, which also reported that he took his own life after being shot during a gunfire exchange with federal police. 

They said he was in possession of 52 live rounds of .38 special caliber ammunition, along with a knife.