Officials: DNA leads to arrest in sex assaults

10:15 AM, Nov 21, 2012   |    comments
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The Denver Post reported Wednesday that William Costello is charged with multiple counts of sexual assault, kidnapping and impersonating a police officer. 

One alleged assault involved a 13-year-old girl. 

Costello was being held on $200,000 bond. It wasn't immediately known if he had an attorney. 

Costello was arrested Nov. 5 after DNA linked him to three attacks dating back to 2008. 

His DNA was taken after an alleged assault on an anti-abortion protester in July. 

A state law requires police to take DNA samples from anyone charged with a felony. 

(Copyright 2012 by The Associated Press. All Rights Reserved.)

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