A terrified North Carolina neighborhood is upping security after a local family was tortured by masked intruders earlier this month. Authorities are still investigating why the family was targeted so viciously. The violent robbers stole a cache of items after the two parents and three young children were tortured, according to The Daily Mail. The men tortured the family by heating up knives on the stove and using them to burn their flesh, Harnett County Sheriff Wayne Coats revealed. Coats told the Mail that the savage torture method was the worst he had ever seen in his career and was used “to…