MEXICO CITY (AP) -- A drunken, off-duty policeman crashed through
                  the gates protecting Templo Mayor -- one of Mexico's most precious
                  archaeological sites -- and landed atop an ancient Aztec pyramid,
                  Mexican officials said.

                  The National Archaeological Institute said the accident caused irreparable
                  damage to the pyramid, but did not elaborate.

                  Daniel Navarro Hernandez, a 31-year-old officer, was detained Friday
                  morning.

                  According to police, Navarro was driving at more than 60 mph through
                  downtown streets before he crashed through the site's steel gates. The car
                  flew 50 feet into an excavation and landed on one of the site's pyramids,
                  which are below street level.

                  The attorney general's office had no information about whether Hernandez
                  was injured.

                  The Templo Mayor, located next to the capital's main square, was once the
                  ritual center of the Aztec empire, and was used to perform human sacrifices.
                  Since the late 1970s it has become a major tourist attraction.