Experts are trying to decipher the hieroglyphs on a stone discovered in September 2018 140 kilometres south of Guatemala City.
Heavily armed Hezbollah, a militant Shia group, has also been designated a terrorist organisation by the US government.
Guatemala's new President Alejandro Giammattei says his country was breaking off relations with Venezuelan government of President Nicolas Maduro and would close its embassy in Caracas.
Authorities in Guatemala say 1,350 Hondurans have submitted documentation to pass through the country, in bid to join hundreds of others heading for US.
Close to 1,000 people gather in Honduras' second largest city forming a migrant caravan that will soon head for the US, as Guatemala leader says Mexico plans to contain the migrants.
Alejandro Giammattei will succeed corruption-tainted outgoing President Jimmy Morales, who leaves office in January.
The winner will take office in January to replace corruption-tainted Jimmy Morales, who leaves with his popularity at rock bottom.
The White House said Guatemala would now be considered a "safe third country," meaning that US-bound migrants who enter Guatemala would be required to seek asylum there instead.
As many Mexicans struggle against unemployment, anti-migrant sentiments are on the rise.
While the flow of South American migrants passing through Mexico to the United States is decreasing, Mexico says the risk of humanitarian crisis is still possible.
Most migrants have much more deeply-rooted reasons to leave everything behind and walk towards the unknown.
With returns from 20 percent of polling stations counted, the preliminary results from the electoral tribunal gave centre-left candidate Sandra Torres 23.33 percent of the vote.
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