Ometepec, Guerrero, Mexico - A major 7.6 magnitude earthquake with epicenter on Mexico's Pacific Coast shook central southern Mexico on Tuesday, causing building to sway and sending frightened workers and residents into the streets as far as Mexico City.

Mexico's National Seismological Survey said the epicenter of the quake was 15 miles east of Ometepec, Guerrero and 10.9 miles underground.

Mexico City Mayor Marcelo Ebrard sent a tweet saying "we have an earthquake" in Spanish. Ebrard tweeted that he boarded a helicopter and saw no visible damage from the air.

Mayor Ebrard also said that the water system and other "strategic services" were not experiencing any problems.

President Felipe Calderón also tweeted that there are no initial reports of major damage.

As the epicenter was inland, there were tsunami watches issues for local waves and the Pacific tsunami alert was not issued.