Updated 10/14/2011 11:17 PM
Investigators Consider More Attacks In Brooklyn Sexual Assault Pattern
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A pattern of sex attacks in Brooklyn rose to 20 Friday after a single arrest shed light on a string of subway gropings.
In addition to the 13 attacks since March, investigators believe three or more individuals are responsible for six gropings at the 7th Avenue subway station in Park Slope.
Women say they were grabbed inappropriately as they were entering or exiting the turnstiles.
Investigators released a poster showing some of the sketches of the men involved.
In addition to the subway incidents, a 26-year-old woman said a man threatened her with a knife on Thursday, placed his hand around her throat, and then fondled her.
Investigators say the arrest of Adolfo Martinez, 26, led them to examine complaints on the subway system.
While Martinez said he engaged in other groping incidents, he has only been charged with one that occurred on October 10.
Anyone with information on the case should contact the Crime Stoppers hotline at 1-800-577-TIPS, or text CRIMES and then enter TIP577, or visit www.nypdcrimestoppers.com.