Christian Rivera was 29 when he was shot and killed on July 7, 2018, while standing with several people on Homestead Street in Roxbury. The shooting occurred in daylight; Rivera was rushed to Boston Medical Center with life-threatening gunshot wounds and was pronounced dead soon after arrival. He lived in Dorchester.

Boston Police homicide detectives identified and arrested a first suspect, 26-year-old Ira Harrison of Boston, within two weeks using video footage from cameras near Homestead and Harold streets and social media posts showing Harrison in the same clothing as the shooter. Over subsequent months three more people were arrested and charged in connection with Rivera’s death: Adnan Tahlil, Demetrius Bennett, and 27-year-old Rashad Mezil of Mattapan. Bennett is described as a known gang member from Dorchester with a prior record. The motive for the daylight attack has not been made public.

Did anyone in Roxbury or Dorchester see the shooting or have information about Rivera’s movements that afternoon?