Jihad Hot Spots 3076 covers most of the Ghost Bears actions against the Word of Blake. There's more in Jihad Terra that I know of about how the Ghost Bears are acting.
Jihad Secrets covers the theory of the the links between Wolverine and the Word of Blake.
I don't believe there is anything that explicitly says the Ghost Bears are after Wolverines, but the Ghost Bears definitely 1)are looking for something from the Word of Blake, including DNA material (scrapings from blackened skulls) and 2) really, really hate the Word of Blake. take no prisoners, kill anyone, including civilian dependents.