From SFPD:

SFPD Arrests Richmond District Homicide Suspect 

On Aug. 24, at approximately 9:31 p.m., San Francisco Police officers from Richmond District responded to the 3900 block of Balboa Street to investigate a reported robbery and aggravated assault. SFPD Officers arrived on scene and located a 60-year-old male victim laying on the ground and unconscious. Officers summoned medics to the scene who transported the victim to a local hospital with life-threatening injuries. Despite lifesaving efforts made by hospital medical staff, the victim succumbed to his injuries and was pronounced deceased.  

The SFPD Night Investigations Unit conducted the initial investigation, and upon being notified that the victim succumbed to his injuries, the case was transferred to the SFPD Homicide Detail.  

Members of the Homicide Detail identified a person of interest, developed probable cause and obtained a warrant for the arrest of 22-year-old Santos De La Rosa. On Oct. 4, SFPD officers located and arrested De La Rosa in Hollister, California. De La Rosa was transported to San Francisco County Jail where he was booked on the charges of 187 PC (murder), 211 PC (robbery), and 245(a)(1) PC (aggravated assault). 

While an arrest has been made, this incident remains an open and active investigation. Anyone with information is asked to contact the SFPD at 415-575-4444 or text a tip to TIP411 andbegin the message with SFPD. You may remain anonymous.    

Inc # 230-604-951