If there is obvious evidence that was left behind by the suspect or if you are concerned about potential fingerprint evidence being not collected, then an online report is not appropriate for you. Officers will not respond at a later time to collect evidence for reports made online. Evidence left at the scene of a crime is time sensitive and easily destroyed. If you desire evidence to be evaluated or collected, then you should make your report by calling 510-577-2740 so an officer can determine if the potential evidence is useful.