Bloodhound searching in my neighborhood

This morning i saw two Pasadena policemen on motorcycles with lights flashing, driving on the wrong way of a divided street, stopping traffic to let two other policemen on foot cross an intersection. One of the men on foot was following a bloodhound, leash taut, determination in stance. I learned later that they were searching for a teenager who had run away from a rehab facility and was threatening suicide. I don't know if they found him. The search area covered several miles in Pasadena and Sierra Madre.