Investigators look over a vehicle that crashed and rolled following a pursuit by U.S. Border Patrol agents early on Wednesday, May 2, 2012, in Casa Grande, Ariz. (AP Photo/Casa Grande Dispatch, Steven King)

Photo by: STEVEN KING

Investigators look over a vehicle that crashed and rolled following a pursuit by U.S. Border Patrol agents early on Wednesday, May 2, 2012, in Casa Grande, Ariz. (AP Photo/Casa Grande Dispatch, Steven King)