Cannot remove checkerboard background from vector file
I downloaded a vector file from Shutterstock - sparkles with an apparent transparent background (checkerboard pattern). When I open it into Illustrator, the 'transparent' checkerboard background appears as a bunch of shapes, part of the image. It doesn't disappear when placed into photoshop. I tried saving it as a png, it's still there. I can't imagine the artist actually designed a 'fake' transparent background into the image. Am I opening the file incorrectly? All I want is to ultimately place the sparkles overtop of my photoshop file. 
