Bond is set at 3 million dollars for the Columbus man charged with stabbing and killing his ex-girlfriend and her two daughters. 35-year-old Wendell Callahan allegedly killed 32-year-old Erveena Hammonds and her daughters last week. Callahan was seriously injured in a confrontation with Hammonds' current boyfriend, Curtis Miller, at her north Columbus apartment. Callahan is due back in court next Tuesday.