NEW : The earthquake is an aftershock of a 6.3 quake that struck March 20 . The quake 's epicenter was 12 kilometers from Mexico City , Ometepec . The quake 's epicenter was about 17 miles ( 27 kilometers ) from Ometepec , Guerrero . There are no immediate reports of injuries or major damage . Residents in Ometepec felt the temblor .
NEW : The earthquake is an aftershock of a 6.3 quake that struck March 20 . The quake 's epicenter was 12 kilometers from Mexico City , Ometepec . There are no immediate reports of injuries or major damage . Residents in Ometepec felt the temblor .