Those look like prosecutors. My guess is that L.E. has gone to the prosecutor's office and requested the filing of charges or applied for some type of search warrant. The prosecutors are undecided, maybe wanting more information, and thought maybe going to scene to look at something or get a better idea of the layout might help inform their decision or bolster their argument. Just a guess. But I can think of no reason that a whole group of some other types of lawyers -- defense attorneys, plaintiff attorneys, estate attorneys, etc. -- would be huddling at the crime scene at this stage.
