BROOKLYN - Police say they have added six more incidents of sexual assaults to the already growing number in the Park Slope, Sunset Park area since March.

Investigators say the spike in the number of attacks comes after interrogating 26-year-old Adolfo Martinez.

Martinez was arrested earlier this week and charged with groping an 18-year-old woman in Sunset Park Monday night. Police say he has admitted to engaging in forcible touching in other cases. They say they are looking into whether Martinez is linked to six other similar cases that have happened in or around subway stations in the borough.