Scientists believe a fireball that graced the prairie sky Thursday evening may have been as large as a desk when it entered earth's atmosphere.

Alister Ling, a meteorologist and amateur astronomer, tells CTV News it is very likely the meteor made it to the ground.

He and other scientists believe the fireball was roughly the size of a desk when it entered the atmosphere and may have fragmented into pebble sized pieces by the time it made impact.

According to Ling a number of scientists believe the meteorite, or pieces of it, could be spread out over a 30 square kilometre area in Saskatchewan just east of Wainwright.

The area is mainly privately owned property full of lakes and scrub.

There is no official search team yet, but Alan Hildebrand a planetary scientist at the University of Calgary is interviewing who he believes to be key witnesses to help determine a search location.

Meanwhile the director of Rothney Astrophysical Observatory in Calgary is advising people not to pick up pieces of the meteorite if they are found.

Phil Langill says people need to be careful not to contaminate pieces of the meteorite. He says pieces should be picked up with a plastic Ziploc bag and should not be handled with bare hands.

With files from the Canadian Press