Anglers fishing in a frozen river in northern Sweden returned with a strange catch - a live turtle they found trapped under the ice.

"My friends did not believe me but then saw it for themselves. And right then it moved," Anna Nyberg, one of the anglers said Monday.

According to the Associated Press,

Nyberg said wildlife experts told her that the 9.6-inch-long turtle probably was of a South or Central American species that would not be expected to survive the grim Swedish winter.

However, Nyberg said she believes it probably was a North American species that can remain under the ice for 150 days by lying dormant. It was not clear how the turtle ended up in the river.