Teotihuacán, the collection of ancient, pre-Hispanic pyramids and temples and listed as a Unesco World Heritage Site, was closed in the wake of the shooting.
The site, which attracted about 1.8mn visitors last year, will reopen on Wednesday with reinforced security, Sheinbaum said.
Sheinbaum, who noted that there are no security checkpoints at archaeological sites, ordered strengthened security at both archaeological and tourist sites nationwide, including the installation of metal detectors at the entrances of Teotihuacán and other sites.
Looking ahead to the summer’s World Cup football matches, Sheinbaum vowed to guarantee safety during the global football event, which kicks off on 11 June in Mexico City. The president said that she met with organisers at FIFA to discuss logistics.
“It is safe to be in Mexico,” she added, noting that 16 million foreign visitors arrived between January and February.