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Monday, August 11, 1997 Page A11 1997 San Francisco Chronicle

Police Release Sketch of Man Suspected in Oakland Rape
They caution linking to series of assaults

Rick DelVecchio, Chronicle East Bay Bureau

Investigators have linked Friday's brutal Oakland hills rape to another sexual assault last month, but they are not ready to connect the same suspect to a series of recent rapes on East Bay college and high school campuses.

Police yesterday released a sketch of the suspect in Friday's assault. The sketch is based on a glimpse the victim had of the rapist as he passed her and her leashed spaniel on a popular Joaquin Miller Park trail. Moments later, the man pulled his cotton cap over his face, wheeled around and grabbed the woman from behind.

Sergeant Larry Krupp said the sketch pertains only to the Joaquin Miller incident, although he said that attack and an assault in another part of the Oakland hills appear to have been committed by the same person. While Krupp declined to give any information about the other attack, on July 26, a woman jogging at Merritt College was severely cut on her hand as she fended off an attacker.

``He knows what he's doing,'' Krupp said. ``He's picking opportunistic moments in very isolated areas.''

Krupp cautioned that there is no solid evidence linking the two Oakland rapes to four other unsolved sexual assaults at East Bay schools. Since mid-July, a rapist or rapists have attacked an employee and a student at California State University at Hayward; a student at Chabot College in Hayward and a woman near San Leandro High School.

``The victims are 19 to 50-something,'' he said. ``All different races, all different body styles, all different hair styles. We're not assuming it's the same guy. There are significant differences in all of them.''

That doesn't mean investigators have dismissed the possibility that a serial rapist is preying on women in the East Bay. A task force of investigators from local agencies and the state Department of Justice is looking for any possible links.

Serial rapists are among the most calculating of criminals -- and thus among the toughest to catch, experts say.

In many cases, the rapists described in the East Bay cases wore ski masks, attacked from behind and subjected the victims to far more force than would have been necessary to commit a sexual assault. For Brent Turvey, a Connecticut-based law enforcement consultant specializing in serial homicides, these are telling characteristics.

``There are many different kinds of offenders,'' Turvey said yesterday. ``Some are very careful and cautious, and some are very incompetent and thrive and survive due to the (inability) of law enforcement to link their crimes.''

Turvey said the East Bay predator fits the profile of a rapist type known to law enforcement as ``angry/retaliatory.''

``The kind who is going to be completely selfish, and they blame the victim for some real or perceived wrong,'' Turvey said. ``The (Nicole Brown) Simpson case, that was an angry/retaliatory attack. You have a high amount of completely unwarranted victim damage. The rape is an extension of the attack.''

Oakland investigator Krupp said the Joaquin Miller rapist ``beat this woman unnecessarily, for whatever reason.'' The victim, whom passers-by found battered and bleeding at the trailside, was treated for her injuries and is now staying with her family.

Turvey argues that serial rapists are successful criminals because law enforcement fails to link their crimes and fails to understand their motives. Investigations often begin late in a series of rapes, Turvey said.

``The most important thing in a serial rape case, more than anything else, is profiling the victims,'' he said. ``Very often there is some overt link that does not become evident until you do a total and complete background investigation . . . Reconstructing their last 24 hours of behavior is so important . . . He may very well know these women.''


The Chronicle Publishing Company

The following is not a part of the original article as published in the above paper, and is in no way endorsed by them. It is an effort to make corrections as this interviewee deems appropriate.

Brent Turvey's Note:

This article very accurately conveys what I said during the interview. The only correction here is that I stated that the offender in this case appears to be consistent with an Anger- Retaliatory rapist, not and Angry/Retaliatory rapist. It's important because it is the official terminology and I don't want to mislead people into making uninformed generalizations. I prefer informed generalizations, when I make them, any day.

But again, it is the official terminology so it's important to get it right. (This general type of offender can also be referred to as the Power-Aggressive rapist, or simply as an Anger rapist) It's also important to note, as I did in the interview, that not all rapists will fit into the general classifications that exist (nor should they be forced to), and there is very often a great deal of behavioral cross-over. This is because individuals and their behaviors evolve over time; that is to say that they are dynamic.


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