When a citizen calls to report a crime, an officer is usually sent to initiate the report. The responding officer conducts the initial investigation and is responsible for the collection of evidence. If the crime is serious or complex, the officer may request assistance from Investigations or the Crime Lab. Some reports may be taken by phone by the Telephone Reporting Unit at 303-980-7300. This is offered as a convenient service to citizens. For certain crimes, the citizen may be referred directly to Investigations to speak to a detective.