l.a. countcoronehas issued subpoen to a number of hidoctors. >> i jusn't believe what was happening to michaelecauseust uldn't believe it. i do belie there's a --i believe that. le cowan joins us with mo details. what's the latest, especiall now that you're heing homicide. >> reporter: i tnk thamight be overstati it. the chief is wting again for toxicology results to come back. this investigation is still ongoing. so i don think he's saying it's necessarily going to be a homicide investigaon. we have seen a shift in detectivest the house the day jackson died. initlly, the us? >> repter: here's what we do know. rememberwe all saw the casket in the hearse driving in t staples ceer on tuesday. we saw the family leave, the fans leave. never saw is casket leav what we knowow is the police may have helped them get jackson out of the arena. >> the los angeles police department cilitad the moveme of the remai of m jackson bo to and from staples center as part of the security arrangements for tt ent and that pretty much all'll say relative to that. >> so gain, that s yester the chief saying they did help the