When Witness 1 (the unidentified friend of Bob Lee) contacted the sister on the morning of April 4th to ask if Bob Lee had gone to her condo the night before, she said that he was there for about a minute but that then she went to bed, so she doesn't know how long he really stayed. I guess that means she doesn't know what transpired during the time Bob Lee was at her condo which was over an hour, and so was he just visiting with Nima during that time?
I haven't read about any toxicology results from the autopsy, could drugs have been involved at this stage of the evening, if what the sister reports is true? It would have been just Nima and Bob Lee visiting together. Too late for toxicology tests for Nima, since it was almost a week after the murder that he was arrested. But I assume they did toxicology tests at the autopsy, perhaps they are still waiting for the results.