Australian authorities have spotted two objects in the southern Indian Ocean that are possibly related to the search for missing Malaysia Airlines Flight 370.

The objects are indistinct but of "reasonable size" -- the largest about 24 meters long (79 feet), said John Young, general manager of emergency response for the Australian Maritime Safety Authority. They were "probably awash with water and bobbing up and down," he said.

"If that piece of the plane is that big maybe it's the tail section" David Gallo, who co-led the search for Air France Flight 447 which crashed in 2009.

The images of the objects were captured by satellite and were being assessed by the Australian Geospatial-Intelligence Organisation. The images were taken in the vicinity of the search area that has been scoured by search teams in recent days.

John Young, general manager of emergency response for the Australian Maritime Safety Authority cautioned the images may not be from the plane.

There can be other debris out there, from ships, for example.

The visibility in the area is poor, Young cautioned. "The weather is not playing the game with us," he said.

An Australian C-130 Hercules plane has been tasked by Australian authorities to drop market buoys in the area, he said.

"The first thing they need to do is put eyes on the debris from one of the aircraft," said aviation expert Bill Waddock. The buoys will mark the place and transmit location data.

The Malaysian Navy has six navy ships with three helicopters heading to the southern Indian Ocean to take part in the search, a Malaysian government source said.

The Malaysian military is checking the new information from Australian authorities, a source close to the investigation told CNN.

"Verification might take some time. It is very far and it will take some time to locate and verify the objects," the source said.

Malaysia's Acting Transportation Secretary Hishammuddin Hussein told CNN he couldn't disclose the information the Australians shared with Malaysia. He said he hadn't seen the images.

But he added, "Air and vessels are going there. You know how big the area is. Every lead is hope. We have been consistent with our process and we want to verify properly."

Australian authorities have spotted two objects in the southern Indian Ocean that are may be debris from the missing Malaysia Airlines Flight 370.

The objects are indistinct but of "reasonable size" -- the largest about 24 meters long (79 feet), said John Young, general manager of emergency response for the Australian Maritime Safety Authority. They were "probably awash with water and bobbing up and down," he said.

"If that piece of the plane is that big, maybe it's the tail section" David Gallo, who co-led the search for Air France Flight 447 which crashed in 2009 in the Indian Ocean and remained out of sight for two years. The tail height of a Boeing 777 is 60 feet.

Australian Prime Minister Tony Abbott says two objects have been located that might be related to missing Flight 370.

Here's the press conference about the debris spotted in the Indian Ocean that may be from Malaysia Airlines' flight MH370. You'll hear from John Young, the general manager of the Australian Maritime Safety Authority's Emergency Response Division, and Air Commodore John McGarry from the ministry of defense.