By Karim Hammam
Police say an undocumented immigrant ambushed and fatally shot his estranged wife outside a Walmart store. Authorities allege the shooting followed the collapse of what they describe as a fraudulent marriage scheme. The suspect, described as a migrant in the U.S. illegally, was taken into custody. The victim's identity has not been released. Investigators are continuing to piece together the circumstances leading to the deadly confrontation.
