"But all avenues will be explored."

From "Virginia Tech Campus Reels From Shooting That Leaves at Least 32 Dead," by Liza Porteus for [1] FoxNews:

The FBI joined police on the scene to investigate. Agency spokesman Richard Kolko in Washington said there was no immediate evidence to suggest it was a terrorist attack, "but all avenues will be explored."

Senior official with the Bureau of Alcohol, Tobacco, Firearms and Explosives told FOX News that agency's response to the Virginia Tech incident was "immediate," and the bureau is making all of its local and national resources, including its crimes lab, available to the Virginia State Police.

The name of the killer has still not been released.