Deleting all raster images in drawing, at once?

I imported the .dwg file from ArchiCAD 12 to my AutoCAD 2008.

The problem is that, there are some dots (Autocad recognizes it as "raster image") all over the drawing. And I need to delete them manually each one of them.

Is there way I could do this automatically? Is there a way to select all the "raster images" at once, and then delete them?

Thank you for the help.

Qselect -> Raster images -> Select all

Thank you.