Police in Omaha, Nebraska, said Thursday that they're looking into whether there's a connection between the recent killings of a university professor and his wife and two unsolved area homicides.
Richard "Dick" Trickle -- who made a name for himself as a NASCAR driver -- died Thursday of an apparent self-inflicted gunshot wound, a North Carolina sheriff's office said.
Six people were killed and more than 100 people were injured after tornadoes ripped through north Texas, hitting Habitat for Humanity homes the hardest.