we served two search warrants in san francisco and an arrest warrant and search warrant in emoryvilletigation, when we get to the point where we are comfortable that we have enough evidence to make the arrest and we are comfortable, this is where working with our district attorney's office really matters. just as an aside, it's not too common where you have a district attorney who prosecuted homicides and a chief of police who has worked homicide. we understand the nuances with these investigations. we both do. so we appreciate the work that our teams, our respective teams do. but when we work together and we communicate, we know at which point, because we are taking advice from our prosecutors, when we are ready to proceed with an arrest, when we have enough, when they feel comfortable enough we have a case we can move forward with. once that's done, we will make the arrest. that's what happened in this case. >> let me just say this. the police arrest standard is probable cause. whether they hand a case over to my office, the standard is beyond a reasonable doubt. we have to remain i