A VENICE WOMAN WAS ARRESTED YESTERDAY AFTERNOON AFTER ROBBING A CONVIENENCE STORE IN THE MORNING.  SARASOTA COUNTY DEPUTIES SAY 45 YEAR OLD KAREN IBARRA ENTERED THE CIRCLE K AT 1883 SOUTH TAMIAMI TRAIL AT AROUND 11:15AM AND DEMANDED THAT THE CLERK GIVE HER THE MONEY IN THE REGISTER.  SHE GRABBED AN UNDETERMINED AMOUNT OF CASH AND FLED IN HER VEHICLE.  IT TOOK DETECTIVES LESS THAN FIVE HOURS TO ARREST IBARRA AT HER SHERIDAN ROAD HOME AFTER THEY VIEWED THE VIDEO SURVEILANCE.  THE CLERK WAS ALSO HELPFUL IN GETTING THE ARREST AS SHE WAS ABLE TO GIVE A DESCRIPTION OF THE VEHICLE AND A PARTIAL TAG NUMBER.  IBARRA IS CHARGED WITH ROBBERY AND IS BEING HELD WITHOUT BOND IN THE SARASOTA COUNTY JAIL.