CNN's Steve Brusk, Ashley Killough, Dan Merica, Paul Steinhauser Shannon Travis and Deirdre Walsh contributed to this report.

CNN: Portman reversal highlights GOP generational split

CNN's Joe Johns, Dana Bash, Gloria Borger, Shannon Travis, Candy Crowley and Paul Steinhauser contributed to this report.

CNN: Santorum benefits from staying in GOP race

Before police settled on Dutschke as a suspect, they took into custody a Corinth, Mississippi, man named Paul Kevin Curtis, who makes his living impersonating Elvis, Buddy Holly and Randy Travis.

CNN: Ricin suspect ordered held without bond