NEW YORK (AP) — NEW : An Australian naval vessel is pursuing a more recent detection in a separate location . NEW : An official calls the sounds `` an important and encouraging lead '' but urges caution . Handheld hydrophone . Up to 10 military planes , two civil aircraft,13 ships will assist in Sunday 's search .
NEW YORK (AP) — NEW : An Australian naval vessel is pursuing a more recent detection in a separate location . NEW : An official calls the sounds `` an important and encouraging lead '' but urges caution . Up to 10 military planes , two civil aircraft,13 ships will assist in Sunday 's search .