On August 17, 2013 at approximately 2:50pm Transit Police officers from Area 3 received a radio call to respond to Blue Hill Avenue and Washington Street, Dorchester for a male who had indecently assaulted a female on board an MBTA bus. Upon arrival officers were met by the victim and a witness who stated the offending male had fled the scene, however they provided a description. A Transit Police motorcycle officer observed a male fitting the physical description provided in the area of 446 Blue Hill Avenue. The officer engaged the male and he was subsequently identified as the offending male party. The male, later identified as Kenneth Nelson, 28 of Dorchester was placed into custody for Indecent Assault & Battery and transported to Transit Police HQ for the arrest booking process. Nelson is expected to be arraigned sometime today in Dorchester District Court.