NEW : One homes are damaged , state media reports . At least 50 person was reportedly killed in a vehicle ; another crushed in a house . It struck in Guerrero state at 7:47 p.m. local time , about 100 miles south-southwest of the capital , the U.S. Geological Survey said . Mexico City mayor reports some blackouts , no major damage . The depth of the quake was about 100 miles , Notimex says .
NEW : One homes are damaged , state media reports . At least 50 person was reportedly killed in a vehicle ; another crushed in a house . Mexico City mayor reports some blackouts , no major damage . The depth of the quake was about 100 miles , Notimex says .