REFILE-WRAPUP 2-Malaysia plane hunt resumes amidst optimism over "pings"
April 10, 2014 at 00:25 AM EDT
SYDNEY/PERTH, Australia April 10 (Reuters) - The search for a missing Malaysia Airlines jetliner resumed on Thursday with a renewed sense of optimism, after Australian officials said they had detected two new "ping" signals that may have come from the plane's black box recorders.