Police have identified a third person killed in a stabbing spree that rocked a Lauderhill community. Lauderhill Police on Thursday said they were not aware of the third victim until he was found dead inside his apartment by family, days after the June 30 stabbings. Detectives identified him as 51-year-old Jeffrey Standifer. According to investigators, the stabbings happened inside a Lauderhill condo community off of Northwest 19th Street. “One o…