While the assailant was tying up Mrs. K., her son, Steve, arrived home in his truck. Upon learning of Steve’s arrival, the intruder turned off the bedroom lights (which he had turned on after blindfolding the K.’s), and the K.’s heard the door close. Mrs. K. freed herself and called for her son Steve, who called the police immediately.
Although the room had been dark except for the time they were blindfolded, the K.’s became aware of several of the intruder’s physical characteristics. Both had noticed that he spoke with a Mexican accent and that he had a breathing problem, probably asthma. During the rape Mrs. K. had noticed that the assailant had little or no body hair. The intruder had long hair on his head, however—something noticed by Mr. K. when he was first awakened.
Menlo Park Police Officer Jerry Rogers was on solitary patrol when he received a radio report of the incident. He was informed that the suspect in the rape was possibly Mexican, that he appeared to suffer from asthma, and that he had fled the scene through the back yard. He drove to the intersection of Willow and Middlefield, near the K.’s residence. Anyone heading east would likely pass through that intersection.
Within a few minutes, Officer Rogers saw a car heading east on Willow Road going between 55 to 60 miles per hour in a 25 miles per hour zone. Rogers chased the car, stopped it, and questioned the driver, defendant Rudolph Vallez.
Officer Rogers first noted that the defendant was sweating profusely and was breathing rapidly. When questioned about this, the defendant said the car heater was on. Officer Rogers saw, however, that the heater was in fact off. Defendant was not wearing a coat. The car’s exterior was covered with dew. When asked where he was going, defendant replied he was hurrying home to Newark. When Officer Rogers asked defendant what he was doing in the area, defendant said he was looking for a nightclub. There are no nightclubs in the area. During the discussion the defendant glanced at his wrists as if to check on the time, then reached inside his pocket, producing a watch which he strapped on his wrist.
Having noticed that defendant had a Mexican accent, that he was breathing heavily, and that he had mud and grass on his shoes, Rogers asked his radio dispatcher to run a check on defendant through the Newark police files. Five minutes later the report came back that defendant had prior arrests for indecent exposure and for prowling.