Police officials say this third big bust in less than two months was a combined operation between DPS and Levelland Police.
It all started Tuesday night when police raided a house on the 300 block of Avenue E.
Four people were arrested and four children were removed by CPS.
Another 11 targets were hit on Wednesday resulting in eight more arrests.
Police say they are continuing to look for three more suspects and they believe they will be in custody in a matter of days.
Police say this raid had nothing to do with the two others and was part of a six month investigation.