No new signal has been received from EgyptAir jet since day of crash

No new radio signal has been received from an EgyptAir jet since the day it crashed in the Mediterranean last week, sources close to the investigation said on Friday.

Media reports on Thursday suggested that a new signal had allowed officials to further home in on where the black box recorders might be located.A radio signal picked up on the day of the crash from the plane's emergency locator transmitter (ELT) allowed officials to determine a broadly defined search zone, but nothing new has since been detected, the sources told Reuters."There has been nothing since day one," a source familiar with the investigation said.