It sounds as though these people live in your complex. First of all you should immediately call the police. I'm a hot concerned as to why you didn't do that in the first place. Once you have done that and appropriate action has been taken by the authorities, you may consider having a lawyer investigate whether these individuals had a prior criminal history. Most apt complexes run background checks on tenants and all complexes have a duty to provide adequate security.
It is possible that you may have a claim against the apt complex although, under Georgia law, the claim would be subject to the new apportionment statute.
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