A magnitude 7.1 earthquake jolted central Mexico on Tuesday, collapsing some buildings, cracking the facades of others and scattering rubble on streets on the anniversary of a devastating 1985 quake, RIA Novosti reported.

The quake caused buildings to sway sickeningly in Mexico City and sent panicked office workers streaming into the streets, but the full extent of the damage was not yet clear. Mexican media broadcast images of several collapsed buildings in heavily populated parts of the city.

The U.S. Geological Survey calculated its magnitude at 7.1 and said it was centered near the Puebla state town of Raboso, about 76 miles (123 kilometers) southeast of Mexico City.