Response.redirect raises "Thread was being aborted"

I've a VB.NET code called when I need to delete an object from DB. On Page_load I check if it's not post back (to prevent a manual refresh) and, after the deletion of the object I redirect to the caller page using Response.redirect. At this point my code raise an

exception:EXCEPTION OCCURS In File_delete.aspx.vb Line Number: 34 Error Message: Thread was being aborted.

and, on Event Viewer I can see that aspnet_wp.exe crashes:

aspnet_wp.exe (PID: 1532) stopped unexpectedly.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

It's not clear why this happens only here because I use the response.redirect also to view the file and not only to delete it.