Footage was filmed on Monday as 27-year-old Julio César Jasso pointed a gun at terrified tourists atop the pyramid at Mexico's Teotihuacan ruins.

Two US Embassy officials killed in a car crash in Mexico following a daring raid on a secret drug lab were working for the CIA at the time, according to security officials. The pair, who haven’t been named, were killed along with two Mexican officials when their car plunged 600 feet off a cliff and...