Malaysia Airlines Flight MH370: Australian Navy detects more sounds consistent with black box

PERTH, Australia, April 8 (UPI) -- The Australian Navy's Ocean Shield ship has re-acquired underwater signals consistent with the black boxes of missing Malaysia Airlines Flight 370, Australian officials announced Wednesday.

Angus Houston, who heads the agency handling Indian Ocean search efforts, told reporters that the ship detected two additional pulses in the large search zone northwest of Perth.

The pinger locator detected, then lost, two transmissions on Saturday and Sunday.

Houston said that officials could not confirm that the pulses came from Flight 370 until they visually identified wreckage.

"I believe we are searching in the right area," he added. "What we're picking up is a great lead."

ALERT: Australian officials say they've detected total of 4 signals in search area for #MH370, need to find wreckage before confirming

— UPI.com (@UPI) April 9, 2014