A gunman opened fire at the Teotihuacán pyramid complex, killing a Canadian woman and wounding several others before taking his own life.
The suspect killed himself, and the nationalities of the injured include visitors from Canada, Colombia, and Russia.
Russian and Colombian tourists have been identified among those injured, along with additional Canadian visitors beyond the previously reported fatality.
The suspect in the shooting has died by suicide.
The death toll has been updated to at least two dead, and the total number of injured is now reported as six, with four suffering gunshot wounds.
The message provides new details confirming the shooter was a man, specifies the deceased was a Canadian woman, and adds that Russia's embassy is checking if a Russian national was among the wounded.