NEW : At least 50 homes are damaged , state media reports . A man walks through the debris of a collapsed building in Wenzhou, Zhejiang province, China, on September 28. Mexico City 's mayor reports some blackouts , no major damage . The depth of the quake was 40 miles , the U.S. Geological Survey says .
NEW : At least 50 homes are damaged , state media reports . One person was reportedly killed in a vehicle ; another crushed in a house . Mexico City 's mayor reports some blackouts , no major damage . The depth of the quake was 40 miles , the U.S. Geological Survey says .