According to TMZ reports:
Police found drugs in Bobbi Kristina’s house in second search conducted.
Over the weekend cops went back to second time to search the house for a second time. The first time they went they found nothing, but they went a second time and seized several items.
Cops will not confirm they found drugs, but family sources tell TMZ authorities told the family that drugs were found in the home.
Law enforcement sources also told TMZ they believed from the beginning Bobbi Kristina was unresponsive face down in a bathtub as a result of drugs.
So you ask why didn’t cops find drugs the first time? Sources claim they were only looking for items that were “out in the open.”