Sketch released of man wanted in Bronx forcible touching spree

The NYPD is asking for help finding the man behind a string of forcible touching incidents in the borough. 
Investigators have released a sketch of the suspect who they say has targeted girls between 12 and 21 years old dating back to Feb. 13 when he allegedly grabbed a 14-year-old on Eastchester Road as she was walking to a train station.
According to police, there have been nine reported cases all together with each one happening during morning hours in broad daylight and within the 47th Precinct, which includes the Baychester, Woodlawn and Williamsbridge neighborhoods. 
The latest confirmed case happened June 11 on Schieffelin Avenue. That victim is one of two 12-year-olds. 
The suspect is described as being a black man, around 20 years old and about 5 feet 10 inches tall with a thin build.